I'm having trouble with this one: some HDTV internal scalers upconvert 480i to 480p while others upconvert to 1080i. It seems that some of these latter HDTV's even convert 480p input to 1080i before display. Which should theoretically (and actually) look better: the 480p (either via progressive DVD player input or HDTV scaler upconversion) or the 1080i??? Or is it a tie???