Somtimes it helps to start small. When I purchased a 50" Sony Grand Wega about a year ago, I got it in part because it was more adept at handling Standard CATV. I got it home and everything looked horrible. the standard channels had strong artifacts, the SD channels looked overly compressed and badly pixelated (blocky). I tried everything on the TV set itself, all my tweaking was not helping. Almost by accident I found that my Scientific Atlanta 8300HD box had a built in upconversion to 1080i feature. Guess what? It worked pretty good. The picture is now equivalent to what you'd get on a CRT. HD is still jaw dropping.
