Seats with a corner view of the 500 level are spread across three different decks of seating. For example, in the NW corner of the stadium, section 547 is attached the to the sideline deck, section 546A is not attached to any deck and section 546 is within the endzone deck. Among these, the best seats are found in the endzone deck sections (ex: 543,544,545). Not only do these seats provide the best angles towards midfield, the lowest rows are about 10 rows lower to the field than the sideline deck and views of the videoboards are much better.
Overall, upper corner seating in the first ten rows are easily the best cheap seats for a Ravens game. Sitelines are good, access to the concourse is good and ticket prices are very good.
On windy days, avoid sections 506, 507, 519, 520, 533, 534, 546 and 547. Each of these sections is on the end of their respective seating decks and get punished by swirling winds. Similarly, avoid sections 506-510 on hot and sunny days where you'll be looking right into the bright sun.