Simple, Bombproof and Fixed

Hmm in m eyes the steamroller is pretty heavy duty, 4130 if i am right. It is a case of horses for courses. All my bmx' s have been 4130, and i dirt jumped on an s&m challenger, which was designed for race use.Any bike will evetually fall apart....it is primarily about yor skills as a rider.
Of all the bikes mentioned for hard use, i would pick a surly....

I still think it is a really good frame, i'm not knocking it at all, the only reason I would go for a cutter or plug is purely because they are proven when it comes to the whole tricks thing, they have been ridden by some good riders that go big and break stuff on a regular basis, and they take the abuse well, think tom mosher, SuperTed etc etc