i just got the new sky HD 1TB box delivered the other day, had a bit of a battle with sky over it, they wanted to charge me £149 for the box + £15 delivery, after a bit of a battle and me telling them i wanted to cancel my subscription, i got it for £49, its a self install box, all pretty simple with instructions to follow.
its got a much bigger memory than the older box, havent really looked at it since i put it in the other night, so cant really comment anymore about it, oh it does look better as well lol