Just took delivery of a 46" GT30. The HD picture via the freeview box is no different to the standard picture. On channel 54 (BBC HD preview) where they show a split picture (of tennis), one side being HD and the other side being SD, I nor the family can see the difference in picture quality. I am using an ariel that is plugged into my standard sky plus box (awaiting delivery of my sky HD box). Freeview channels 50 & 51 displays a 1080i logo in the left hand corner when I put them on, but the picture quality is no better to the standard picture. Any suggestions appreciated before I call JL and ask them to replace it?