Ok, so I'm looking for a new RPTV, and since I play a lot of Xbox, I have been told to get a TV with 720p capability. Is this necessary? Are a lot of Xbox games displayed in this format, or will they be in the future? Also, there aren't a whole lot of TV's that can display or upconvert this format. Which one is best. I'm looking in the 50" range. And also, is there such thing as a digital receiver that connects to the Xbox and then the TV to accept the signal?