Yamaha has two sereies of amps; the HTR sereies and the RX-V sereies. Anyone know what is the diff. between these. I was told by one salesman that they were the same and that it had some thing to do with marketing. I am also looking at buying a new receiver and am thinking between a Denon 3802, a Yamaha RX-V2200, or a Sony STR-DA4ES. Any help will me much appriciated.