My understanding is that Surgeon uses an Electro Harmonix looper for live looping (can't remember which one), and an Octatrack for some sequencing duties. I seem to remember reading that he doesn't especially care for the Octatrack, but keeps coming back to it for some reason or another. I can totally identify with that. I keep trying to incorporate Elektron gear with my modular stuff, and can never quite get into that flow.