I have decided, after fighting with Comcast and refusing to pay them 1 penny more, to dump my Humax and my HD and buy a Premiere. The only question is the 4 or the 4XL. I already have an external 1TB HD to hang off the P4. So the question I think becomes 1 large HD in the XL or 2 drives with the 4. Other than THX, is there any benefit to one over the other? Thanks.