It's the side behind the team benches...the bouncy seats are on the loud side where the supporters groups are. Mezzanine seats are actually a good place to watch the game (I like field level for the atmosphere, but you are better off being a ways up if you want to see the 'big picture' of plays developing, formations, etc).
I had Dips season tickets on the "quiet side" (wasn't noise anywhere back then). Might check the mezzanine. Thanks for the info ...