The HD box outputs less quality than HD upscale (720) if it is viewed in 576p does it not? 576p is dvd quality anyway isn't? Would there be much difference outputting SD at 726 or 576. I get Sky HD on Sunday and am starting to worry. I have TVDrive at present and the pq on SD channels is fantastic and I can stretch the picture. Other aspects are rubbish so I am dropping it. Therefore if I leave the Sky HD box on auto, then it outputs 576 over the HDMI input, but stretched into 16:9 if it was a 4;3 broadcast (thanks Neil). I hope I have got it right. So, is the pq good and better than Sky digital?Thanks, Maree.