I have been upgrading my system a little. I went from an H/K AVR25...75wpc x 2, 65x5 I think, with an old 50W Velodyne. Now I have an Integra DTR-7 for my pre-pro, a 500W Infinity sub, and two Audiosource Amp Ones...one for each front channel giving me around 200wpc x 2. I had two sets of floorstanders...Klipsch KG5.2's (sensitivity 96d, 100W RMS rated) and a pair of Polk Audio LS50's (sensitivity 89db, 250W RMS rated) both 8ohm. I always thought the Polk's sucked so I stuck them as my rears and used the Klipsch up front, but I guess I never threw enough power at the Polks because ...DAMN!....hooked up to those 200wpc external amps they kick butt! YOW...frickin'...SAH!...is all I can say. Since I have a matching Polk Audio center channel I sure would like to get another pair of the LS50's for the rear now. Anybody wanna trade But seriously....if anyone out there has some high power capability speakers and is throwing a piddly amount of power at them, you might want to reconsider. Oh yeah...and BTW....Rush 2112 makes a great test for your system!