I am considering buying the Yamaha RX-V740 from a local dealer for $599. Does anybody have any experience with this reciever? It's rated at 90 watts per ch. Is that a true rating? Are thier any better recievers with on screen display at that price or lower? Also, I am going to use it for a 7.1 set up by wiring the back 2 channels in series. Do you see any problems with that?