Which Classe amp, "Omega"
I would suggest you post a thread in the Audiophile Forums section under "Amps Preamps" asking this specific question to see what others suggest.
I'm sure you will get a variety of answers, I am currently looking at amps for my MBL 101E's. I had CAT JL3 Sig. MK2 mono blocks but do to reliability issues I decided not to keep them.
One amp that interest me and you may want to look at is, "Karan 1200's"
I use to own Avalon Isis speakers in my other set-up and one of my issues was finding the right amplification to get the bass working properly, well I have heard lately from others that the Karan's are a great fit. There isn't allot of info. regarding these amps but you can do a search including this forum, "Big Karan amps"
Westside_music (Gary) is the North American distributor, nice guy. I have talked to him a couple of times and will be making arrangements to hear Karan product in my system in the near future.