I personally wouldn't look at the Yamaha's in this price range. I find them too unrefined and ragged (and a bit bright). I also wouldnt put too much thought in the Sony. Their amps havent really been up to snuff. The Onkyo and the H/K are viable contenders. Also look at the Denon 1800 models (1803, 1804...). You may be able to find a Marantz in this range (the SR4300 or 4400), if so, consider this as well.