I have finally decided to go with Yamaha as a receiver due to my 80%HT 20% music listening. What I need to decide is which models. They seem to have too many lines. The two I have seen the most is RXV and HTR lines. What are the difference? I heard somewhere here that the RXV line if bought over the internet will not be warrantied by Yamaha. Is that true? Is the amp section the same or is the amp in RXV better? I am thinking of the HTR 5560 but also considering the RXV1300? What are other in this price range from Yamaha? I would like DDEX, 6.1, component switching, 5.1 or 6.1 input. Two zone would b nice but not necessity.