Could you please review the Yamaha DVD-s1500? One question I really have though. I'm currently using a Yamaha RX-v1400 Receiver with the Aperion Audio 5.1 system, and a Toshiba SD-4800. If I purchase the Yamaha DVD-s1500, am I truely going to notice a marked improvment in sound quality. I have a pretty good ear, but I'm not sure I'd classify myself as an audiophile. Please help, and forgive me if I posted this in the wrong place. You can reach me at chefkbk@centurytel.net. Thanks.