I've had 2 4x4's , 1 2wd saph & 3dr, the 3dr was the best of the lot then 2wd saph, i would never have another 4x4 saph or esc cos as i found 4x4 no fun at all, the only good thing was a lot better traction out of bends on trackdays with the 4x4 ! I think the 2wd T5 box is a lot nicer to use than the 4x4 box.
Simon.