I am thinking of closing my Sky account, but I don't want to hand back my old black MySky HD decoder in case I ever want to join up again.  I do not want Sky to make me take the new white Sky box in the future.  Now, when I signed up for the MySky box there was an option to "buy" the decoder rather than rent it. That is what I did. Does this mean that I do not have to send it back?