I find the most fun group is the 600's. Likes to party, sometimes too much though. You can see the entire field, but you can only recognize the players by their numbers. Seats are steep though. (not price but angle)
the 100's i find are the middle of the road group. They tend to like to dress up and get on camera. In the endzones you get close, but once the game is on the other side you will catch yourself watching the big screens most of the time.
The 300's is real nice seats, better food and pee spots, but a tougher crowd. Might even be telling you to sit down because they can't see the game.
the best view I had was the 100's on the 50 yrd line about 40 rows up.
never sat in 200 or 500's