If you bought an LCD HDTV then you'll get that 1080i signal converted to 720p. Progressive scan is the native output on LCD HDTVs. As far as the difference between 720p and 1080p, you'll only notice a real difference if the TV is larger than 50 inches. Anything under that is barely even noticeable, even up close. 1080p is a little better, but not enough to warrant the cost, at least in my opinion.