Amp for Thiel CS6

I am considering purchasing Thiel CS6 for a combo two channel/surround system. And looking at Denon's 5800 for video switching/preamp (need the bandwidth of Denon or B&K for HDTV). I've heard the Thiels preamped with Denon and then McIntosh MC352, Proceed HPA2 and just the Denon straight. Using the Denon as an amp did not do the Thiels justice (duh). Compared to the McIntosh, the Proceed did not have the clarity - I assume insufficient power for the Thiels. Any suggestions for other amps (new or used) in the same price range as the McIntosh MC352 @ $3500? Any other thoughts on such a system - I am not yet a certified or certifiable audiophile and could use some advice. Thanks