also i noticed of the amps you mentioned that you tried, you didnt mention either mcintosh or pass labs...and those are the only 2 that i have heard a noticeable difference with....i am curious if you have tried "thousands" why didnt you try mcintosh or pass labs since you are so keen on trying "thousands". I think if i tried thousands of different amps i would have given up after a couple hundred anyway. (grin). I am only up to about 40 or 50, but always willing to try another amp in hopes of finding one i like as well for less money.Over several years I compared thousands of Luxman, Harman Kardon, Yamaha, Sony, Technics, Pioneer and Mission amps and receivers with instant switching capability on low end and up to ~$2500 speakers in a sound room and at low to low medium volumes the sound is virtually identical to each other except for some entry level Sony receivers using STK amp IC's. We did blind testing so that we could not cheat and be influenced by our bias(s). When getting into the more difficult load speaker types a more expensive high current capability amp is req'd as we know and in that category I've heard a couple that sounded different and that again was at low to low-mid volume levels. Of course for headbanging rocking situations we obviously need lots of power but we are chatting about sound quality not quantity. Have you been doing blind listening tests?