Originally Posted by Skiddins

There is a reason that the top drivers are all using gear diffs.
They are consistant through a run, and prided you use the Xray diff you wont have to touch it for months (mine didn't lose any oil for 7 months!) which means it will be exactly the same run after run.
'Easier to adjust', once set you don't have to adjust anything.

They give much better traction out of slower corners and help to put the power down.
And to cap it all, the gear diff is 10g lighter than the ball diff.

P.S. I have only snapped 2 rear belts in over 18 months