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

Hey @mzkmcxv

I don't know about their amps, but I've had their processors and, sadly, they were easily spanked by 7 year old Theta processors.
They sound exactly like what you'd expect a Japanese EE with no musical background to produce.  Very quiet, no distortion and no midrange or bass. 
This is a comparison with no room correction applied. The almost identical sound produced by Emotiva processor which I sold almost immediately. I can't tell you how disappointed I was in both. I really wanted a modern, inexpensive processor and the Casanova sitting right next to them kept spanking them.

The Oppo 103 with no surround processor on the other hand sounds far better than either.

AVSForum.com has many suggestions. My personal list :

Top tier:

• The one made by DTS, Datasat?
• Theta
• Classe
• Anthem

Followed by:

• Yamaha
• Marantz

And really disappointing :

• Onkyo
  
• Emotiva