Does anyone have a good recommendation for the best quality home theater platform?

Who said anything about a 5 channel amplifier? :)

I run 5 monoblocks.

Best,
E

Buy integra/onkyo processor and get an upgrade on this website www.audio-upgrade.com. you will be surprised.

Your question is a bit vague...What’s the budget #1?  is this room already finished or are you starting from scratch?  How big is your room going to be?  What do you want it to do?  Want to watch multiple things at once i.e. sports on different channels? Do you want a projector with a drop down screen or one fixed to a wall ? Would you rather have a big flat panel TV or one behind the drop down screen or multiples behind it?  What do you watch or listen to?  Do you stream movies or do you have 500 Blu-Rays or both?  Do you stream music? Do you have a record player?  Is this going to be a combo type room where you want great stereo listening in here as well or do you want it dedicated to movie watching?  How about PS4 or XBOX? 
If it’s just movies and games and it can be done, I would put in a Dolby Atmos, DTS-X, IMAX type system consisting of 7.1.4 as a minimum and maybe wire for some future channels, but again, depends on size of the room.  Do you want all built in speakers or free standing out in the room?  Free standing will sound better than built-ins and running a pre/processor with separate amps will sound better than receivers and having dedicated 20amp circuits to plug it all in will be a huge help!
A lot more questions based on your answers...Hope this gives some direction and things to think about though...

Check out JBL sysnthesis.
its pretty darn good stuff..

Home theater is not about sound quality as Millercarbon wrote.
It is about sound effects. 
A home theater processor can not reproduce the sound qualty of a two channels preAmp.
what ever is told about ´´ immersive sound ´´ , ´´3D sound ´´ , ´´auro 3D, etc . It is all about sound effect.
It cost me  a lot of money to learn that.