Will be interesting to hear your comments on the Classe. Couldn't get a chance to listen to them.
Would forget about the Naim Nait 5. Heard it and not all that impressed, unless you only have a music diet of live rock music. (I'm sure that comment will get a lot of angry Naim cult members responding angrily to my ignorance). Yes, it did sound a lot more powerful than its 30W suggests, but I'll rather have 80W that sounds like 80W, rather than 30W busting its balls to sound like 80W, if you know what I mean. Also a bit too idiosyncratic for me, with the DIN sockets. I'm not sure why but Naim users are very cultish. Don't know of any other brand that creates such protective and loyal members. Having said all that, it did sound pretty good with rock music.
Interestingly, even a Primare A30.1 integrated came out on top of the Naim NAC112/NAP150 pre/power in a What Hi-Fi supertest.
Actually, if you don't mind a slightly leaner sound, but one with good detail, transparency and musicality, you should check out the Plinius 8100. My only serious gripe with it was the loud hiss that it produced, but perhaps that was a flawed unit.
Me, I'm going to be checking out a used VAC Avatar that my local dealer has come by. Will be interesting to see how a $4000 all tube amp, compares with the amps in the $1000 to $2000 price range that I've been checking out.