Classe and Levinson have definitely been added to my list. As for Spectral, yes, the folks at Progressive had good things to say about them, but because of having to use Spectral's preamp, and because I also use these speakers/amp(s) for home theatre, they didn't think it was as good of a match. Plus, after looking at photos and discussing my room, they agree with me that I have a "bass-sucking" room, which may require a fairly stout amp.
I am hoping to be able to audition my CS3.6's with amps from Krell, McCormack, and Theta (and my Adcoms, of course) down at Progressive. I'd love to hear Bryston, Classe and Levinson, as well, so I may see if any dealers in my area carry them.
Thanks again for all the feedback, Tom.