Simple, Bombproof and Fixed

What like the same strength level as a bob Jackson?! Haha gimme a break please, there is no way in hell that BLB own brand frames and/or BJ frames are as strong as a Volume Cutter, Plug is a brilliant frame, probably stronger than a Steamroller in my opinion, I don't think you can go wrong with a cutter or Plug for tricks, both are very strong frames which have been ridden by some pretty hardcore riders.
I'm not sure on the steamroller for heavy trick use, as I don't know anyone thats abused it as much as people have abused cutters/plugs in that respect, but I know they have a reputation for being tough, and the build quality seems excellent, but none of those other frames I mentioned are anywhere near as strong as plug/cutter/steamroller frames IMO.

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....