My home theater installer is selling me a Sony RDR-VX500 combo dvd/vhs recorder/player. He says it's the newest, the best, and the one I would want if I knew about these things. Looking at the BestBuy website, they only offer the Sony RDR-VX515. Is this a newer model? Any idea when the VX500 first came out? Cnet doesn't seem too crazy about the VX500. Suggestions?? Thanks