Pretty much settled on a Philips 36PW9618, just looking for best price before I make the jump. does anyone know why some of these sets have a coarser dot pitch which visably widens out at the edges of screen and others don't? They all seem to be panasonic tubes (dots halfway down either side of tube). Starting to wonder if I'm imagining this, sets I was looking at last night (Tottenham Court Rd) all seemed much better screens than the comet/currys sets I have been looking at. Maybe I just need glasses?!!