Not the biggest Sevendust fan, but I've seen them twice and they killed it both times.
I've never been disappointed by Disturbed live. Korn I've only seen once. They were pretty dead on stage, but they still sounded great. A friend of mine said they were very energetic at the show he went to on this tour.
04/03: The Acacia Strain(?)
05/13: Slipknot/ Hatebreed (?)
05/26: Metal Alliance (?)
06/05: Aborted (?)