The advantage of the up-scaling DVD player is that the image can stay in the digital domain the entire time it is being processed. The data will be read from the disc, sent through the DVD players scaler then sent digitaly to the set via DVI or HDMI. It will finally be sent through a digital to analog converter for viewing.

Other DVD players will read the data. Convert that data to analog. Then send it to the TV via RGB(analog). The set will convert it back to digital, send it through the scaler and, then covert it back to analog for viewing. This results in more D/A conversions.

If the up-scaling DVD player has a good scaler it should produce a better picture.

I would find a company that has one set up and ask for a demo if you are concerned.

Mav