From what I understand, the Torsen multiplies torque to the slipping wheel x 4 vs the Quaife x 2. However, if one wheel is off the ground, 4 x 0 =0. Both wheels will not spin so if you are stuck in the mud, you have to apply the brakes to mulitiply the torque to the slipping wheel. The quaife does not suffer from this problem.
Also, the quaife has a great limited lifetime warrenty and the case is billet vs the Torsen's cast case. BUT, the Torsen doesn't need a billet case because the gears do not put undue stress on the case like a Quaife.
So price is the tie breaker here. Somebody post US dollar prices please.
