[super__dan]

Interesting as that's quite different to my exerience.

Front diff vs full one way, one way has more steering into and out of the corner i.e. on and off power.

Off power you get more turn in because the inertia of the drivetrain (inc motor) isn't pushing the front wheels out. You get more weight transfer to the front and the front is now only doing the steering like a 2wd car so you get more steering.

On power I think of it as the axle literally hauling the front of the car round. There is no diff action so it's harder on the front tyres but for me 99% of the time it is faster.

None of this is based on a D4, my limited experience of centre one ways is that they are a bit of a half way house but 'safer' than a full one way.