An amp to drive Thiel CS3.7's?

Looking for a good SS amp for my very difficult to drive Thiel 3.7s. I think a good dual mono could do the job. I was thinking Ayre V-5XE, MarkLevinson532H, ClasseCA2300, Bryston4BSST2. The ML is a bit expensive and would probably be stretching my budget. Anybody have experience with the Thiel CS3.7? Any commendations in the 5-8k price range? The sound has to be very smooth and round. No aggressive stuff please.Thanks for the feedback.

I might also consider buying something pre-owned. A Krell 302E was offered to me near the price range I'm looking at but I have no idea if it would match my taste! Some recommendations also include Conrad Johnson 350A. This is all very confusing!