My wifes cousin who holds the Chrismas party for her family had to replace his 50" Mitsubishi SDTV (it broke) with a 60" Mitsubishi HDTV. Now the picture quality is HORRIBLE, it looks like a TiVo PVR in the lowest quality setting, lots of digital artifacts and sawtooth lines. I have tried tweaking the setting and did get it a little better, but this has some serious artifacts. He has an old (5 years)entry level Dish network receiver. He claims and I would agree that his old SDTV was WAY better. Will going to a newer Dish receiver like the 6000 improve the SDTV PQ? He mainly watches SD and does not receive HD signals. My experince is with my Sony 53" SDTV and DirecTV, mine looks fine. But his is unwatchable esp football games. It is a 4:3 HD ready Mitsubishi 60" RPTV. I dont know the model, but he bought it at a mass marketer call Conn's in Houston Texas and I doubt it is the top of the line, but not the bottom. Does this set have a line doubler? Any advice for him?