Raptor, Montu, Alpengeist, Talon, and the IOA Dragons. Only ridden one, but the people here are predictable...I'm sure you'll see a few B:TR...
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LocoBazooka--Sevendust, Nonpoint, Stereo Vent, Mushroomhead
Korn Tour (With no name)--Korn, Puddle of Mudd, Deadsy