I always thought the order from worst to best was: 480i, 480p, 720p, 1080i, and 1080p. But is it actually the order: 480i, 480p, 1080i, 720p, and 1080p? I was confused about this. I had the 1080i and 1080p resolutions selected on my DirecTV. Should I change it to 720p and 1080p?