You know, upgrade-itis is a funny thing.
I still use a lowly Parasound HCA855A bought in 2002 from UBID for a pittance in my modest low to mid-fi system. Throughout the years, much like you, I've been tempted many times to upgrade, even if only for future expansion of my current 3.1 system (small room, tight layout, so downsized from 5.1).
Now the latest sore temptation is the closeout pricing on the A-965 at $699. Undoubtedly it is a very fine amp and while the power ratings are modest by wattage lover standards, I know from reviews that the internals of the amp are very thoughtfully designed and implemented, just like its twin the A7200 which, as you know, I also coveted for a while. 80 lbs of 7 channel amp should not be treated lightly in any respect (no pun intended).
And every time one of these opportunities comes down the pike, I once again revisit the manuals and compare specs to give me the once-and-for-all reason the pull the trigger. I don't know ... maybe I'm just cheap.
Maybe having a small multi-purpose listening room filled with furniture helps keep my wallet closed.
But as a long time Parasound owner, I still find that the 'tiny' 855A with a 1 kVA toroid, 68,ooouF in 5 channels, 115dB SN ratio, etc. just continues to fit the bill for me and my 88dB, 6 Ohm speakers. How long I can avoid finally upgrading in this area is an open question. Maybe when the wife and I build our retirement place? C'est la Vie!
So how you enjoying those Songtowers(?), you lucky dog!!!!?