I've got mine but haven't got the dish up yet so can't comment at the moment. I decided to buy after learning of the DISECQ control as this kind of makes up for the lack of Freeview recording (it enables you to receive other FTA satelites).
As to getting a box Dave, Argos Direct is your friend. They seem to be the only people receiving loads of stock. JL, Currys, Comet all out of stock when I've tried. Argos, loads of boxes!!!! They've been having 4 or 5 deliveries a week so far as I can tell when others have been unable to get one!
Forget the Argos web site though, it shows out of stock when they're in stock over the phone in my experience: -
Telephone direct: 0845 6402020
I got mine over a week ago. Stock at 1st try, delivery in 48 hours.