Sorry if this has been asked but is it truly necessary to have a HDTV that can display in 720p for the upcoming X box 360 system? I know the 360 will be able to scale a 720p games to 1080i, but is there truly a difference between the modes two besides the framerate? I plan on buying the Samsung DynaFlat 26" Widescreen Flat-Tube HDTV (Model: TXR2678WH) within the next two weeks or so from Bestbuy. It says it can display in 480i, 480p, 720p and 1080i modes. Some honest feedback would be really appreciated if I need a 720p HDTV and opinions on the Samsung model.