After months of researching makes and models I've decided to pull the trigger on a 5687 sammy. I still lean slightly towards the sxrd as far as pq but when given a quality, dedicated hd feed over hdmi this set is obviously an incredible value. Perhaps I've missed the answer to this question somewhere in this thread but here it goes... I have direct tv with a three satellite dish for local broadcasts. I realize that I'll need the hd receiver but will I also have to upgrade this dish? There's been a lot of discussion on cables, signal feeds, etc. What about the satellite cable that goes from the dish to the receiver box. Should this be upgraded and to what to optimize signal quality?