Well, I've had a number of development engineer friends tell me they much preferred the torsen over the quaife in MTX-75 equipped vehicles. I think either one would be fine for most people, but I ordered the Torsen.
IIRC, The Torsen for the MTX-75 was actually developed when Ford SVT engineers really didn't like the way the quaife made the FR200 Focus handle early in development of the concept car.
