I have had SKY HD for some months now but with my Pioneer Plasma have yet to find much difference in picture quality. The sound is better with 5.1 digital on some programs. When I press the (i) on some HD programs they are the same as the ordinary channels when pressing the (i) button. Some not even saying that they are HD DD. They have a W only meaning wide screen but I can't see any picture difference at all. So is the £10 I am paying just a con by Sky?