Dax,
When I auditioned DVD players a few years ago I had a similar experience in that some players sounded better and produced better video. I settled on a Marantz VC5200. I also liked the Denon models. Your experience may be a result of comparing older technology with a newer model. IMHO the newer DVD players produce superior audio and video. I also have an Oppo but the main advantage is its' capability to upconvert to 720p through the DVI output. You should listen to and view some of the new players to compare them and decide which you like the best. I wouldn't buy an expensive player now because improved performance formats are scheduled to be introduced by the end of this year and the begining of next year.