better to rebuild diff or buy another?

[peytonracer4]

my diff is loud as crap right now. it whines so much that with the top up it's all i can hear.
would it be more cost efficient for me to rebuild the one i have with new bearings or buy a used LSD?
my main concern is the used LSD i buy having the same issue. it'd be nice to have a nice "new" rebuilt diff, but is it worth putting that much time and money into an open diff?

[jlevie]

The most economical choice is a used differential. But as you know that is a "roll of the dice". If you have the tools and skills a limited slip differential can be rebuilt for $600-700 in parts.But the job is more involved than just swapping in new parts. Backlash, pinion preload, and pinion depth must be adjusted after replacing bearings.