Do Ceramic Diff Balls REALLY make a difference?

[martgifford]

As the title says. I have a new re-build kit for my losi diff in my pit box. Felt the current ball diff today and it operated differently depending on which wheel I turned. For example. I turned the right wheel and the left wheel moved in the opposited direction. I turned the right wheel and the left wheel stayed still and the motor moved. So I thought this is a good excuse to do the diff.

I know a lot of people are running gear diffs and I am considering it. But wanted to know if it is worth spending £14 on ceramic diff balls. I have realised lately that it is not worth upgrading everything on cars. For example upgrading alloy carriers means it breaks something else rather then the original plastic carrier absorbing the damage. So I would be interested if anyone can honestly say they notice the difference between standard diff balls and ceramics. As not everything is worth upgrading and a lot of racers I feel recommend everything rather then honestly considering if that upgrade part is worth the investment

Also, what is carbide in comparision to ceramic and standard.