Originally Posted by CDan

It's not that simple. You need to try it both ways and choose what looks best to you. Various combinations of player and monitor make it impossible to predict. In very general terms, it's true that the HD-DVD players tend to have better scalers than most monitors do, but it's not certain enough to take it for granted. You might even find that SD-DVDs look better at one setting and HD-DVDs look better at the other setting.