Best picture from an under $400 DVD player

It has been a while since I posted, but I am back. Hello to everyone!!! Quick question? I just purchased a 50 inch Panasonic plasma screen (TH-50PHD8UK) for a new condo (Yes...for those of you wondering..I did finally use the money from my old system to buy my first place). I am looking for the best picture possible from a DVD player under $400 (and to be honest.. preferably under $300). The audio quality of the DVD player (cover your ears audiophiles) is irrelevant to me as this will only be running through the TV's add on speakers. I am more then willing to buy new or used. Thank you for your suggestions.

Dan

P.S. For those of you wondering..I am now in the D.C. area.