what speakers to buy

I would consider these too, especially with tube electronics.
https://www.audiogon.com/listings/full-range-jm-labs-utopia-alto-be-2017-09-24-speakers

You cannot audition speakers but, with great caution, you can listen to some systems on youtube. There is one company that recorded many systems at shows. Their recording quality is average at best but it is at least usually consistent. If you have good enough headphones you can hear the difference. I will not tell you what I liked most because it is far outside your range, even the least expensive models. This might help you focus on, say, a dozen of speakers. For $5k-$6k used there are so many good and very different speakers.

You must remember that your open plan layout requires bigger speakers with alot of bass output. Here are a few things to consider:

1: Is the room very lively, if you talk loudly do you hear revereration of echo of your voice in the space, if it is very reflective then speakers which tend to sound bright might be a bad thing.

2: What kinds of music do you like to play? 

3: How loud do you play?

The Alto Utopias that Inna mentioned are quite excellent they have a big sound and will work well with the Rouges which tend to sound a bit rolled off and lack a bit of bass control but the JM Labs also tend to be a bit on the Hard side, so the combination should be excellent.

How many squre feet is the room including ceilings? 

Leacy speakers are a steal they sound like $15k speakers yet are brand new at $7k and they have a smooth sound in the top, and a lot of bass. 

Older Kef 207.2 are awesome. 

The Dali Helicon 800 you mentioned are terrific as well.

Troy
Audio Doctor NJ

I like speakers with big sound and also those with as few drivers as possible. In addition, I think, and someone will corect me if I am wrong or not quite right, that Danish speakers are designed with solid state electronics in mind.
If you do eventually decide to get Focals, you might want later to upgrade your Rogue to VAC, Allnic or somethign else to take the sound to the next level. Cabling will be important too, isn't it always? Purist Neptune fluid cables should be great. Or Echole. I am sure some others would work fine as well if that's too expensive, something like Fusion Audio Magic line.

I'm throwing my vote behind the Focals too. I'm sitting here listening to 936's with no regrets. All Focals have a sound like not much else. You'll never put an amp behind them that's unworthy of them. Pass power is doing true justice to mine. I wouldn't suggest something as merciless as my build of an F5 for something with that Be tweeter. You want something more forgiving and almost anything is. 

You may want to check into something in the Golden Ear Technology Triton Tower line. https://www.goldenear.com/products/triton-series

I’m on the same page with Troy. What kind of music do you play and how loud? Also, what city do you live in?

Being a Vandy fan....I would recommend something from the Vandersteen line. The TREO CT would sound awesome with the Rogues (I have TREO CTs). Btw, I would give Johnny Rutan at Audio Connection a call, he carries both Rogue and Vandersteens and will give you some good advise. Personally and in my opinion, in a high ceiling and open space, one of the best speakers I’ve heard was the Devore Orangutan O/96, power by a Leben CS600 tube integrated amp. Very musical (both highs and lows) and if jazz is your thing, give it some juice...close your eyes and you’ll feel like you’re right there inside the club. A bit out of your budget even used but they maybe worth saving up for. Good luck!

I’m not much of a Wilson fan myself, but used Wilsons are a great buy, IMO. Wilson is constantly coming out with Mark 2, Mark 3 and other versions, causing the owners to dump their speakers at very good prices. Personally, If I had the room, I would go for a pair of Sophias. You can even get them used from Wilson dealers, certified and in mint condition at very reasonable prices. There's 2 pairs of Sophia 2s up right now at $5500 from dealers.  
I think that's a great buy myself.  I heard the Sophia's at one of the shows with Lamm tube gear and they sounded very good.  For me, I much prefer the smaller Wilsons to the larger ones, but that's me. 

Vandys are too low without enough bass for such a big room, also they are not known for loud volum or rock.

The focals mentioned above are great for a large room and as they are a tad bright will compliment the Rogues

Another good choice Psb T3 big tight bass great with Rogue.

I would hop on those Focals.

Troy 
Audio Doctor Nj

+1 Inna. Don't hesitate - those Focals are a great place to start and would hold their value.

The "don't buy without listening" is not a problem with the new patented line of Tekton speakers. The owner of Tekton Design Eric Alexander allows a 60 day listening period. 
I personally purchased a pair of Tekton Impacts believing I would be returning. The first listening session began at 6:30 pm and finally ended at 4:30 the following morning. They replaced a pair of Magnepan3.5r speakers I had loved for 20 years. I paid $1800.00 for the Impact's.
Check out the Tekton Double Impact thread here. Several of the posts reveal the Tektons replacing $30,000 per pair speakers with this $3000 pair.
I have no affiliation with Tekton. I just consider myself very fortunate for finding what I consider the best speakers I have ever heard.
I think you would be shocked at the capabilities.
Listen Intently.

Second the used Wilson concept. Also think very highly of Revel.

I think a general strategy here would be to make smart used buys keeping resale value in mind. Essentially create for yourself an extended auditioning program by buying right and reselling and moving on if the speakers don't work for your room or electronics. I know it's not as easy with speakers but short of traveling to retail shops or audio shows you don't have many other options. Speakers are a very personal choice more than any other component.

revels aren't very directional and work very well in open configurations

dragonbutx

If you really have to buy without listening I’d be inclined to point you toward Revel speakers. The reason is that they are very well engineered, having been guided by many decades of research using true scientific studies on what type of speaker parameters seem to matter most to our subjective evaluation of sound. (They have used Harmon’s blind testing methods). And the designs have been very competently created to reproduce those results, to produce smooth, neutral sound dispersion in real rooms. And it really works. I recently had been on a big speaker auditioning binge and was surprised to hear even the lower priced Revel speakers - e.g. the $2,000/pair Revel F36’s sounded distinctly more full, more neutral, more refined and controlled top to bottom than some significantly more expensive other brands I had listened to.

Revel Performa3 F208 is around $5,000 and you may find it punches above it’s weight for the reasons above. Here are the Stereophile measurements:

https://www.stereophile.com/content/revel-performa3-f208-loudspeaker-measurements

Now, measurements aren’t going to tell you definitively that you like a speaker. However, if you are really going in blind, speakers by a company that is known to be very technically competent and advanced, and whose speakers measure reliably extremely well, at least helps predict you end up with a well designed speaker that has a great chance at sounding neutral, smooth and well balanced.

Of course, the best bang for the buck will likely be used speakers. But even then, you may get an expensive speaker at 1/2 price used, that wasn’t particularly well designed and even a cheaper well designed speaker (e.g Revel or others) will beat it.

One final note, if you are in fact sort of new to putting together a higher end system: I would caution you about taking advice to spend a significant portion of your budget on audiophile cables. I’d suggest buying cables known to be well engineered (and for which measurements are supplied vs "wow" sounding subjective descriptions), for instance some Belden Cable from Blue Jeans cable or similar outlet.
Those will feed your speakers all the signal they require, you can start there, put your budget into things that will make the biggest difference - e.g. speakers - and later on when you suddenly become flush with cash and get the itch, you can experiment with the expensive cables.
(Most audiophiles, unfortunately, use protocols for determining sonic differences that are little different from those used to "show" that every alternative medicine, new age therapy, astrology etc are all effective. Which should give you a clue as to how much stock to put in to many of the claims you’ll encounter for high priced cables. My pal has a system with $50,000 in high end cables. My system with simple, relatively low priced Belden cables sounds much better - he would agree - because I put the money where it would matter - speakers, room treatment).

If you have an open area, you need largish speakers to fill it sound.  I recently purchased Legacy Signature SEs from Dave actually, and definitely love these. However, I also have a soft sport for Focals, and those Utopias are pretty high end. You can't go wrong with either brand IMO. They sound different however, Legacies are warm and engaginng, very high res mind you.  And Focals I always find to be very exciting to listen to, which is also a great thing.

Look at ProAc.  Some good deals used.  Most models are two-ways, yet lack nothing in bass.

you cannot listen easily at a dealers but you can 1. take road trips (or add a listening afternoon to a trip to a city), or 2. buy mailorder with a return privilege

for $5k I'd get Maggies - used 3.7i's can be had for $4k 

the question of what speaker to get is first of all what will work in your listening room

all speakers will benefit from being set up away from a corner or back wall (Roy Allison notwithstanding), but it is more important with Magneplanars and electrostatics

1st, you buy speakers (& then use positioning and room treatments to make them sound the best)
2nd, you buy amps to drive the speakers

you will then work to find the best source material for whatever way you are feeding the amps, LP or digital

I usually buy used CDs and rip them onto iTunes - if I really like the album I look to see if there are better recordings or masterings (and even for things recorded in the 1960s there can be better masterings or treatments to remove say wow & flutter on the aged Ampex used to make the original)

+1 for nycjlee
+1 for John Rutan. He sells both Vandy and Pro Ac and can give you great information. (His Agon ID is 'audioconnection').
Speakers are a personal decision, don't let anyone railroad you. If you can make some time to visit a dealer, I heartily recommend it.
Prior posters have given you a lot of choices, so I hope you can try to audition a few.
BTW, Zu makes some great speakers, at a great price. Since they have a trial period, why not get a pair? All you lose is the shipping should you not like them.
Bob

Sorry, but I don't think GoldenEar makes anything that comes close to the Focal Utopia line. I don't even think their lineup sounds better than the Focal 900 series, except for maybe their Reference. 

thanks for all the great responses. some answers to a few questions that were asked:

the room is aprox: 1100sqft with 11ft ceilings and not overly lively.

did not go crazy on cable (i do think they make a difference but at this point not sure its worth spending as much as the rest of the gear costs) - i have ZU MISSION speaker wire and  ZU MISSION rca interconnects

music is mostly hard rock and classic rock - pantera, avenged sevenfold disturbed, rush, ac/dc, judas priest, volbeat with a little bit of jazz, classical, mototown and pop thrown in depending on who is over

i now have some other speakers i had not looked at before though the focals seem to get the most love and i did have the focal 1038BE  on my short list. so what models focal & revels in the used 5-6k price range are best?

i want clean and clear, but dont need to hear the guys in the recording booth talking or every mistake on the recording - just want to enjoy the music- i love the dimensionality that tubes give.  the endless soundstage

someone mentioned being new to high end audio. i wouldnt say "new to high end" just new to the modern stuff.  i have a 3 car garage stuffed full of tubes, vintage speakers, amps and parts. well maybe not stuffed anymore since i have been selling it on that one site (am i allowed to mention that?)

anyways thanks for all the great help and ideas - i think i may do some posting in other categories. maybe about tube rolling?

thanks 

gotta add one more thing. the funny thing about this hobby is i can afford to spend more but i have to decide at which point i am willing to sleep on the couch or in the bed

We are talking about speakers, but your source should be excellent to experience what all those speakers are capable of. I don’t think your Denon with Sumiko cartridge and Rogue phono stage will cut it. Cables do not have to cost thousands but really good cables are not inexpensive, sometimes even used.
I like ProAc recommendation.

  I read all the replies and I don't recall seeing anyone say, "Buy Bose"). A road trip definitely is in order for you. What is your nearest big city, and how far away is it?

chicago and indy both about 3hrs away.  the phono stage is in the copland cta-305 preamp with mullard cv4004/12ax7 tubes. 

I agree that the Focal Aria 936s are fab, and thanks for confirming my experience with them. I've listened to them with the NAD M32 I'm going to buy and loved what I heard. The 926s not so much.

I agree with Randy-11. I would definitely audition a pair of Maggie 3.7is. I am predudice being a Maggie owner and lover for 40 years. Hooked me I I never looked back. In addition to the Maggie's I have used Revel 208, Focal Aria 936, and B and Ws, I just prefer the Maggie sound.  

I have recently heard the Revel Performa F208 with a tube preamp and a solid state amp and they sounded very very good, I purchased to F206s as I have a 12 x14 room and they sound great , very detailed and smooth, not at all forward or bright. I'm using a Mark Levinson 532h amplifier with Anthem receiver as preamp. Stereophile reviews them as text book speaker design and sound way above their price. 

@dragonbutx.  Canton is a lonely club, but they are fantastic.  That tweeter is really something.  Unusual that you even have the option to purchase used.

how about Zu speakers?

very easy to drive...

If you want something that rivals the Focal Sopras, Gamut’s, Magico’s, or Tannoy’s (i.e. detail resolution, dynamics, clarity, soundstage, imaging, etc.) few of the speakers noted above offer that, if any.

However, some, within your price range, that do are:

Wavetouch Audio Grand Teton’s / Antero’s (my choice)
Linkwitz Labs Orion’s / LX521’s (521’s are a Madisound kit) (my choice)
(sometimes you can find the Orion’s on Audiogon)
AudioKinesis Jazz Modules / Dream Maker

And... if you want a known brand name:

Emerald Physics OB’s
Nola Brio Trio (2.1 or 2.2) (my choice)

Nothing, but the best speakers available, matches the performance of any of these.

I recently bought a pair of highly regarded speakers that simply don't sound like what I seemingly need to hear, and will not be buying speakers again without personally auditioning them using my own earballs. I realize you simply never know when aural synergy in your gear pile is gonna happen, so the advice of the advocates of a good return policy is well taken (assuming the break-in period is less than the return period)…my current speakers (bought years ago after being impressed by friends pair) surprisingly match well with my recently adopted lower powered SE amp scenario, and I was only trying the new ones to add a degree of efficiency...they paled in comparison to what I already had so OOPS. 

Personally, I hew to the likes of ProAc, Vienna Acoustics, Spendor, Silverline, and similar.  Having a better sense of your priorities, you should look at Vanderstein Treo CTs.  John Ruttan, Audio Connection, is an expert on both ProAcs and Vandersteins and gives very good advice.

thanks again for all the input. still doing a lot of looking and reading (i know still not a substitute for listening) and checking out some of the other brands mentioned.
also think i will take a day trip to chicago in the next couple of weeks to really get an idea of what some of these brands sound like that way i can be more comfortable with whats out there.
at this point i think i may up the speaker budget a little.
short list right now is: 
focal 1038be  or sopra
dali euphonia 800 or epicon 8
revel ultima studio 2

also considering sonus faber amati homage

in my 1st post i mentioned EW andra II any thoughts on those

to all the maggie lovers i have heard some of older models and some others of that type and while i do think they sound good they are not for me on a daily basis. also ZU was mentioned and i seriously considered them for a minute but in the past i have never been happy with high efficiency speakers with more than say 50 watts.

i see all the brands and models everyone mentions and that is where the head starts to explode. so much to consider and there will never be enough time to see or hear it all. i did buy the preamp and amps by reputation and reviews and am extremely happy so far.

Probably the most open and natural sounding speakers you will find at your price point

http://boenicke-audio.ch/

Dragonbtx, are you near Springfield IL? (You said three hours from Indy or Chicago. I live in Indy.)

We have 3 dealers here, but a wider variety of what you want to audition can be found in the Windy City - a road trip is  an excellent idea. You could even plan it around a Chicago Audio Society meeting ;-). For the kind of investment you're making, take two days if you can.  Don't rush yourself. We went on an auditioning spree last spring and ended up going in a completely different direction from the one we originally thought we would take.

I've been in the hobby a long time and once had an 800+ square foot room with high ceilings - not easy to find speakers that satisfy in that large a space. My advice is to look at only truly full range speakers that can go very low and render dynamics realistically.  That usually means big and heavy and $$$ but not always.  

It's been nearly 15 years since I heard the EW Andra IIs but I thought they were outstanding - they sounded great on every kind of music played through them. They would work well in a large space. The Andras were 19k back in the day and will demand excellent and powerful amps with comparable front end to show what they can do. There was a pair earlier this month here on Agon with an asking price of $7500 - a screaming deal if there ever was one. The seller was in Nashville - worth a drive IMO.

I would also add the GoldenEar Triton Ones and (especially) the Triton References to your audition list. Just make sure the dealer has some serious electronics feeding them - GET speakers tend to get plopped down in HT theater rooms with mid-fi multi-channel amps that won't show what they can do. These are seriously good speakers: full range, huge soundstage, transparent, dynamic and they go LOW - courtesy of their integrated powered subwoofers (the Refs are rated to 12hz)  - while remaining superbly coherent. They are also, unlike some other speakers listed in this thread, easy to drive and not too fussy about room placement. And they're very attractive in a minimalist-modern sort of way. I dismissed the GET line as HT speakers for years until I actually heard them. 

Happy hunting!

I've been interested in hearing the Boenicke speakers given their growing rep for great sound in a small form factor.  Unfortunately they have very little North American presence (non in Canada).

Probably the most open and natural sounding speakers you will find at your price point

http://boenicke-audio.ch/

Sorry, but I don't think GoldenEar makes anything that comes close to the Focal Utopia line. I don't even think their lineup sounds better than the Focal 900 series, except for maybe their Reference.

Apology accepted. Curious if you've heard the T Ref's. I'd suspect you haven't.

if you have WAF issues, you might want to:

1. get Maggies - as they have very high SQ for the price
2. or get something expensive that looks like it cost very little

an example of #2 would be xlnt mini-monitors with some "end tables" (which are really subs)

KEF LS50 (un powered)

I have two systems that I have spent 20 years painstakingly matching to the rooms in which I listen to music. One large room and one smaller. I do not own these speakers. I own Aerial 5Bs on sound anchor stands and Celius 202s (smaller room). I have demo'd at least 10 other speaker pairs during those years. None of which exceeded my Aerials except....

 the KEFs which I would describe as fully equal to my Aerial 5Bs at 1/2 the price. 

NOTE: I have no connection to any companies or dealers of any kind. That's my input!

I have been lucky enough to own many very good ones.  My listening bias is towards acoustic Jazz and female vocals.  I have had the most pleasure from the top Magnepans.  If you are more into rock, esp. at high volumes then the Maggies may not be the best. 

Dragon - if you are upping your budget I have a pair of Wilson Audio Duette 2's for sale on this site.  I had them paired with a Raven Tube amp and the sound was wonderful.  I just upgraded my speakers to another level.  

Legacy audio Focus SE
That's what I own and really enjoy. They replaced revel ultima salon 1's. 
I could not ever go back to revels 1's or 2's after owning these. 
They are very efficient and tube friendly. They have great bass and are very big sounding. Also very tube friendly. Your amps would be ideal with these speakers. Sometimes the  factory has great prices on demos and B stock. These speakers are an absolute steal at there price point new or used considering today's crazy prices.  If you need more info you can message me. 
I am no way in cahoots with legacy. I just love these speakers. 

Good luck. 

Paradigms That what I bought for my system over 20 years ago Studio 100 version 2 . The sound today is just as good as when I first bought them and they sound great. Many amps have driven these but they are very easy to drive. The sound of these speakers you never get tired of listening to. They  changed there product line but you have o give them a listen I think you will like them. 

My vote, of course, would be the Spatial Audio M3 Turbo S speakers and pocket the difference from your budgeted funds.  Revel F208's would be in play too and are stunning in appearance.  I'd urge an audio of the SA speakers... open baffle speakers perform in a way that box speakers can't.   Just my two-cents worth.  Lots of great recommendations from the folks about, no question.   

Here are some suggestions that have not been mentioned yet:

1. Audio Physic Avanti V 
2. Aerial Model 9's
3. Rockport Mira I (The last pair sold on Audiogon went for $4700!)

Others have mentioned the Wilson Sophia II and Eggleston Works Andra.  Amplifier matching notwithstanding, the are both good choices.  My first choice would be the Rockports though a little hard to find.

A second for the excellent Avanti Vs. I think (memory fails at this point) the Andras went lower.

@gdhal 
No, I haven't heard the Reference model. I think GoldenEar are pretty good speakers for the money they're asking, but their entire line sans the Reference model largely targets Focal's 900 series line. My rubs with the GoldenEar products are their tendency to vertically comb a bit and the nature of AMT tweeters in general. AMT's are extremely flat way up into the rafters of their range and that adds an unnatural, though ear-popping, sparkle to them, regardless of how well behaved they are. They tend to be more forward sounding and that leads to them leaning the highs further forward than the midrange. Lastly, I don't find their dispersion to live up to the technical claims. Finding the balance with AMT's between depth and width is a much more difficult struggle than it is with other transducers. Beyond all of that, the Focal 936 is widely noted for it's brutal transparency and sensitivity to nuances in music and gear; a fact that attracted me. It also measures extremely well. And finally, the width, depth, and accuracy of the 936's imaging is absolutely top notch at any price. Much of that has to do with the tweeter producing a better integrated sound with the midrange; a point where GoldenEar's do have struggles. 
And you want to tell me that their Reference, which uses yet another AMT, competently competes with Focal's 1000 series, Sopra, and Utopia lines? I'm not ready to buy that jazz. AMT's are great drivers, to a point. I probably won't own another pair until I hear a pair that are less directional than the many pairs I've already owned and heard. That's the main reason I own Focals. 

The Focal 900 series is decent but I could see many people choosing GE and other similarly priced offerings from the usual suspects like Revel and Dynaudio over them. We stopped carrying them at the shop for just that reason but I was sad to see the 1000 series and up go. The AMTs in ELAC and Audiovector sound fantastic. I went from Focal 1008 BE to Audiovector SR1 Avantgarde Arete and it was the better speaker overall.