right now my TV is 1080i only.. so my cable box upscales to 1080i if it's 720p.. when i get my new sony 46xbr3 it's a 720p 1080p tv. But cable doesn't come in at 1080p right? So now my cable will be showing at 720p? so what happens when i view a channel that broadcasts 1080i like inHD or HBO-HD .... does it downscale everything to 720p if it's 1080i? how will the picture compare to the 1080i tv im running now? will the 720p look better or the same or worse? thanks, Rob.