Outer Limits 4x4 Board

Hi there, looking for feedback on aftermarket 4.88 ring and pinion to suit 9"inch Landcruiser diff heads.
What brands are people running? and which brands are failing?

Will be used in winch comps , so 35"inch simexs, lockers, chromemollys and 400hp - so will get a hiding

Cheers

nitro seem to have a good name, but i havent got much experience, just havent heard anything bad about them.