I compared it to a normal DVD of King Kong, on my Samsung 1080p TV. I have the elite with the HDMI output so the testing scenario was at its peak. I honestly cant say it was much better in quality i even had someone with me the has been in the TV industry for over 25 years monitoring colour correction etc and they were not all too convinced that it was much any better either. Some newer/cooler features are added on the HDVD as opposed to the normal DVD. This optional attachment is still quite bulky and would have been idealistic to have intigrated it into the Xbox unit from the beginning, or at least the Elite model. But for a measley $50 you do score with the remote and the King Kong HDVD title all bundled in together. Making this a nesessary component to your Xbox package. Though it would have been nice to have an optional Black case cover instead of the dated off white colour.