I hope someone can explain this because I know many of you have the same set and also HD antennae. So I just got a HD antenna. I hook it up and set the t.v. to auto program. I get a bunch of analog and digital channels tuned in. First, let me say that 480i SD cable from my cable box does not look so hot on my set. Not impressive. There's a lot of noise in the signal. HD channels look great as expected. The 480i digital stations over the air are much, much, much cleaner than the cable signals. The OTA HD signals are comparable to the HD cable signals. But, I just can't get over how much better the OTA 480i signal looks, no noise or static. It doesn't have the crisp, sharp, detail of the 1080i signal but if all of my SD cable looked as good I'd have absolutely no complaints. So anyone have any idea why the dramatic difference. BTW, I am watching on a 60"sxrd set, comcast digital HDcable.