The east and west endzone upper decks are closer to the field and lower to the ground than the sideline seating decks. This gives the front rows in these sections relatively good views of the field for a fraction of the price of sideline seating.
Avoid the temptation of buying seats in the top rows of the endzone. While the price might be right, you may need a knee surgery or two after walking up the steep and plentiful stairs.
For fans needing another reason not to purchase the top rows, these seats are among the windiest and coldest in the stadium. Conversely, the east endzone (511-515) gets pounded by the sun. That may be good in November, but watch out during early-season games.