I had my ca 1000 gone through last year and have no plans to get rid of it any time soon so know how you feel about your 800. I currently use the Yamaha uncoupled to power my center channel. You did much better than I back then as my stereo was nothing impressive. I spent most of my adult life working at sea and did not get into audio until much later.

I have been looking at the various five channel options and like the looks of the 7500 but want to hear one. In a perfect world I could find an out of warranty used one cheap enough to cover the cost of upgrades. My Adcom with the TO6 output transistors ran just shy of $400.00 per channel but had the leaking cap issue driving up the price.