Best used DVD Player...Not interested in Blue R...

You have lots of good answers here and the Oppo's sure have a good reputation. I'll just add that I'm considering the Toshiba HD-A2, A3, and A30, all can be had for at or less than $300 (new). They also have a good rep for upconverting standard DVD's and if a movie or concert comes along in HD-DVD, oh well, you can play that too.

My Sony DVP 9000 ES is a wonderful DVD player and OK/good on CD SACD also. I do not think the newer cheaper players will match the Sony video or audio but of course are very good values none-the-less. That being said, I was going to replace my Sony with a Toshiba HD DVD as people say the video on DVD is on par with the older Sony. (HD DVD player audio on redbook CD reported as being poor). Maybe now is the time to put Sony up for sale cheap for all you old format diehards.

Panasonic XP30, XP50, Denon 1600, 220, or 2900 would be the best used bets.