You can never have too much power. An EAD Powermaster 1000(5x200) works extremely well with the Denon. You should be able to find one on Audiogon in the $1500 range. Make sure you get one with the upgraded power supply. Normally the V cut silver faceplate models have the upgraded power supply.
Help.... Need Amp advice
I am currently in the market for an amp to provide a little kick to my system. I have the klipsch rf 3II, rc3, and rs3's with a velodyne HGS-12. I'm most interested in powering the fronts and center speakers but I am also considering a 5 channel amp to power 'em all. So far I am torn between the Odyssey Stratos HT-3 (150x3), an older acurus A200x5 (too much power?) or 125x5, or a parasound HCA1205 (140x5). I should mention my pre/pro is currently a Denon AVR 3803 (85x7), and my time is for the most part split 50-50 between music and HT. Overall budget for the amplifier is $1-2K. Thanks, any advice/opinions are greatly appreciated!