People can say resolution is a "small thing" but 1080P TV's look much better than 720P TV's. I wouldn't buy a 720P TV again unless I was trying to save money, and from what I've seen at Best Buy, 720P's are becoming harder to find, 1080 is the new standard.
Also, 60 FPS is way smoother than 30, when I first played Rage I didn't know it's frame rate was that high, as soon I started moving around I noticed how much smoother it felt compared to Fallout 3/NV.