I just bought the last model ATV on Monday (not knowing a new one would be released today). It's unpacked, but I haven't actually hooked it up yet. As far as I can tell the only significant difference is 1080p, right? Is it worth returning this and getting the new one on 3/16? I'm just getting started with home theater, and I'm not very demanding. I read one article that suggested most consumers wouldn't be able to tell the difference between 720p and 1080p. Is that true?