Haha, wow. Calm down guys.
The ball diff actually takes more adjusting, once its set its done, and matinecne and rebuilding but it offers better handling. I don't suggest it for bashing but for racing its a huge plus.
A gear diff does not blow out in 5 tanks, how do you think 1 hour mains are held at big nats' races?
And Blackfoot, has good advice, I agree with him on alot of his words.