I just merged a couple of your posts together. Dont believe there was any need to post 4 messages, all saying the same thing...

As for a Bravia 1080i tv, they are quality tv's and i wouldnt see the need to change if i were you. As you said most games display in 720p, and the picture quality is fantastic. I certainly have no problem playing my games in 720p for the moment.

I can tell you now the difference between 720p and 1080i. 720p displays a smoother image, perfect for fast moving images, and at a very high quality. 1080i is for more static images, therefore not always perfect for games, it displays pictures at a little higher quality, but when the images are fast moving the picture can be completely ruined. Therefore, i recommend 720p for gaming in particular.