I have season tickets in the 300's at the 35 yrd line for a long time. You get to see the plays develop and don't miss anything.
I've sat lower a few times in the 100 and 200 level, and like the 300 level way more.
The standing is part of the game to me at this point, but overall being able to see everything that is going on, i don't think you can beat the upper deck.