
TV is minimally able to claim HD with a very modest incarnation of 720p. As such just about any camcorder that is HD should be a great option to max out picture quality.
BUT... if you are shooting home movies of the family, do you want to settle for the current

TV (barely HD spec)? At some point, hopefully soon, there will be a next-gen

TV that will (hopefully) step up to full 1080p quality.
If you've shot your family memories in lower quality, they can only be scaled up to 1080i or 1080p HDTV qualities, which means you lose picture quality. On the other hand, if you shoot them now at 1080p, you can master them in 1080p for a "futureproof" version (even enjoy that version on computer screens), then make a lower resolution version to max out the current capabilities of the

TV "as is". I choose this option, as you never get to go back and shoot very precious family video later on, so why not get it as good as you can get it now?
Then, yes, I use iMovie to render a version for

TV, but look forward to the day I can replace all those movies with the 1080p versions to max out the quality of what I shot... and what I can see on my HDTV. I'd at least give this some consideration before you lock into a 720p camcorder- especially given that the price differences are relatively minor spread over a few years of use.