I use Orion Platinum and a number of VSTi's to construct my repetitions. I work alone although I sometimes have help from my four year old son - he's very good at making cacophonous noise (with or without a keyboard).
Nope.
Orbital, Underworld, Chemical Brothers, Prodigy, Kraftwerk, Depeche Mode, Erasure, New Order, Moby
Orion Platinum, Evolution UC33e, Roland PC300, numerous VSTi's. Basically, all computer based.