I really appreciate all of the feedback so far.
WRT the idea of separate 3-channel and 2-channel amps, I would prefer a one-box solution. But if I were to go with separate 3- and 2-channel amps, wouldn't it be more important to spend more on the 3-channel amp than the 2-channel amp? My thinking is that by doing so, I have not only the best possible 2-channel sound, but also uniform amplification for all three fronts of the HT speaker array. Or am I missing something?
I brought the Accuphase down from another system because it happens to be - for me - one of those elusive SS amps that has some tube-like qualities. But I need the Accuphase to remain in that other system, and again, I would sure like to find a one-box solution.
Classe is yet another amplifier brand that I had not thought of. Hey, up to a point, the more good options the better, right?
I obviously have some research and auditioning to do. Should be fun!