I would want to avoid the lower-end Yamaha's due to how they rate there recievers and they don't really rate them honestly. The RX-V640 would probably run about 35W true power.
My three choices would be the Denon, Onkyo, and HK... HK being my top pick.
www.SoundCity.com has the AVR-125 for about $200 refurbished and comes with the full factory warranty. HK also honors there products very well in and out of warranty. One reason alot of people love them... One guy got to use his old reciever that broke as upgrade credit. Not a bad deal at all.
