The best HDTV you're gonna get is over the air. Everything else is going to be a downgraded quality from that.
Umm...can't an OTA channel suffer from sharing space with subchannels? At one time I had two OTA receivers, Dish HD, and Insight cable HD (Indianapolis), and I always thought that Insight cable had the most pristine picture, even on the locals. OTA was a very close second, followed by Dish, but truth be told they all looked great.
Edgar in Indy