We Will Rock You here in Vegas. LOVED it (I think I'm one of the like, five people that enjoyed it, but whatever), but ouchhh.
Movin' Out wasn't too loud for me, but I was pretty far back when I saw it, and to be honest, I was so engrossed with the dancing that I didn't notice the music as much as I probably should have.
STOMP was loud, but I loved it anyway. I saw that too long ago to really remember it clearly (in San Francisco, I think), but it was so awesome.
"Sawyer, you're going out a youngster, but you've got to come back a star!"