Antenna < Cable < Satellite for HD. HD is pretty much HD. Some sources look better than others, but what you really want is the programming. The best place to get that is Satellite. I have Dish--I had Comcast, and the only thing I miss is PBS. I was unable to pick up PBS OTA in HD (they have a digital signal, but load it up with alternate content instead of HD.) I'm just outside of the Denver metro, and we have some land issues on the top of the mountain that's preventing us from getting good HD signals. The only one I could reliably pick up was Fox. I decided the antenna wasn't worth it until the broadcasting antenna issue is worked out.