I work near the stadium and love how it beautifies our city. I have attended 4 games, 1 in the suites, 1 in level 1, 1 in level 3 and 1 in level 4. Not a bad seat, but I can't imagine sitting high up in level 6 because of the angle. The stadium is really great for games, the atmosphere is amazing.
I have also been to a concert here, and have friends who have been. We all agree that the acoustics are not nearly as good as all of the other venues in Indy.