I am about to buy an RP HDTV and have narrowed the choices down to the Sony KP46WT500 or the Toshiba 42HDX82. The issue now is 720p conversion. As I understand it, the Sony converts it to 480p while the Toshiba converts it to 1080i. On the other hand, the Toshiba converts 480p to 540p, which I understand is not necessarily better. Anyone have experience with 720p converted to 480p and 1080i and care to share your thoughts? Is the conversion to 480P a significant loss? (There was a thread that touched on this but never really reached an answer.) Ultimately, I could just wait and get the KP46WT510 which will supposedly convert 720p to 1080i; however, I'd rather not wait, for a number of reasons. (Anyone have any idea when it's supposed to be available, anyway?) Also, does the 480p to 540p conversion significantly worse DVD picture quality? Does it improved the quality from a 480i source?