I need advice on which speaker

Blackjack - you mention auditioning is a challenge.  30 min from Phila. means 30 min (to an hour, I'd guess) from a number of brick and mortar audio shops.  2 that come to mind are Community Audio in Germantown and Quest for Sound in Bensalem.  I'm certain there are a few more.  I'm not saying you will find all the speakers previously listed in this thread but, regardless, making time for in store listening, if at all possible, would be educational at the very least. Good luck in your search.   

I have MartinLogan Theos with a McIntosh 6700. I listen to all types of music but mainly jazz, classical, swing, blues and rock. These are tremendous speakers and I will be upgrading to the Ethos model in the near future. Give a listen to these speakers before you buy anything.

A key issue you want to consider is if the speaker uses proprietary drivers. I'm a Snell fan. Snell is out of business. Not a problem for me because ALL of the drivers in my Snell Type B's are off the shelf Vifa drivers. The last speakers Snell made were $50.000.00 at retail. They had proprietary drivers. Bad for when replacement time rolls around. I bought a pair of 20 year old Type B's on that other site. I bid $2000.00 and won them for $660.00 The midrange drivers were delaminated. I bought the replacements from Madisound for $80.00 a piece or less. They sound like new and to me, it was a bargain. The Type B's by the way were designed by Kevin Voecks who also designed the Revels you are thinking about. It is necessary to consider that any or all companies in this industry can go belly up. Protect yourself by buying equipment that will be as future friendly as possible. The Type B's are now 20 years old. Do not think that new speakers can or will out perform an older model. I love going to audio shows. I've listened to speakers costing six figures. ( I realize that hotels aren't ideal listening rooms). Still I've heard my Type B's sound as good or better than most. My 2 cents. Happy hunting! Joe 

Thiel Audio CS-3.7?

Why not? Good, well-designed speakers with a wide-spread market. I believe Theil was sold to a large conglomerate, so don't know how that's going to affect their quality? Any Theil owners out there?