I don't think that you are going to find a one-box solution to your quest. I would recommend you spend a little time at hometheaterhifi.com. This would give you a great course in video quality and analysis. They review many dvd players. Sad to say, but the high end dvd players do not put out the best picture. You therefore must compromise other aspects in order to obtain great video.
I also think that the processors used for video keep improving at a faster rate than audio. An even slightly newer dvd player will exhibit better performance than a slighlty older one
I also think that the processors used for video keep improving at a faster rate than audio. An even slightly newer dvd player will exhibit better performance than a slighlty older one