Man I wish I could go to this.
Avenged Sevenfold, Children Of Bodom, At The Gates, Amon Amarth, Wintersun, Steel Panther, and Halestorm would all be awesome to see, the rest I either hate or don't care for, but I'd go just for the before mentioned artists alone.
4/25-26 - M3 Rock Festival
5/24 - Styx/Foreigner
5/30 - Journey/Steve Miller Band
8/14 - Motley Crue/Alice Cooper