Originally Posted by ncx

If you think a quality plasma with a good uncompressed HD signal looks looks grainy, it is either defective or maybe your eyes are! Having seen them both side by side in a light controlled viewing room, I can assure you that 1366x768 does not look grainy next to 1920x1080, using the exact same source and letting the older panel's scaler handle the down-conversion. There is a difference but it is small.

edit: to clarify, I am talking about the same 1080p signal on a 1080p display and a 720p display. I am not talking about comparing a BR disc on a 1080p plasma to the way compressed HD cable looks on a 720p plasma. There is no 1080p source on cable or sat., so the only true comparo is to use a BR or HD HVD player on both, which is the way I compared them at my local A/V shop.