The technology is moving on and even a lot of mobiles now can display at that resolution.
The cost difference is hardly anything, and when you get a blueray player, the telly won't be able to keep up unless it can run 1080p
My big tv is hd but not 1080p and the blueray has to run at 720 for it to display on the tv. Matching the two up would be nice when I do rent blueray films, and my camcorder runs 1080p50 also so another reason why to chose the higher spec.
My big cam (Panasonic SD900) supports 3D with a lens attachment, but I'm not in any hurry to chase the 3D down. It records at 50fps, but realistically I've also got a phone sized 1080p Kodak play cam which does 25fps but realistically, the output quality is like chalk and cheese on them.