Ok, so im looking for a new amp, ive currently got a Yamaha RXV-1300 but i am thinking of upgrading for the HDMI and High Def audio, and generally more power to run my speakers. Right now I am leaning towards the Pioneer. As near as i can tell from the spec sheets it is the most robust of the three in terms of power output. A far as i can tell it is the only one rated at 140 W/ch with all channels driven, the spec sheets on the other two seem to avoid stating one way or the other. if anyone has any input on these three it would be greatly appreciated.