yes we've recently had it installed, however as we were previous sky customers we got a special offer and got it for �149. At that price its worth it, but its only mainly sports channels and things like discovery that broadcast in HD i find, so if ur not an avid fan of these then no its not worth it YET. But i must admitt, it is very very good picture quality.
�299 is a lot of money for that and i dont think it warrants paying that price, however, if you currently dont have sky+ then it might be worth it as sky+ is the best thing since sliced bread, believe me!