I currently have a Sony DA777ES receiver that is in great condition. I've been debating upgrading my receiver to get something that can handle the newer audio encodings, can do HDMI switching, and as a bonus has some iphone integration. I saw that this pioneer is for sale for $300 on Newegg, which looks like an amazing price for the features it has, and it seems to get some pretty decent reviews. I know that when it was new, this sony receiver was pretty high end, and is held in high regards as to sound quality. If i were to get this Pioneer, would I be giving myself a downgrade in terms of audio quality? What do you think my sony receiver would be worth if I tried to sell it?