I'm looking at a 46" Bravia but am worried about how its going to show Coronation street for her indoors. You can put these things off for ever, HD DVD and Blu Ray is starting to come down to a reasonable price so I'm looking at investing pretty soon.
As you say Cartoon CGI is the best for these screens.
Pop over to Play.com and see the films they have on offer. They are a good price, I would have thought the first films would have been £30 each but they are about half that.