I have a 93 4x4 pickup with 33x12.50s on it. It came setup with 4.56's, but I think it's time to step up to 4.88's (along with some skinnier tires). While I'm at it I was thinking of adding an ARB locker to complete the package.

I noticed a lot of vendors offer pre-built 3rds that fit the bill. Are there any that you guys recommend over others because of components, build quality, warranty, etc, or are they all pretty much the same? There's almost a $200 difference between some of them, but I'd hate to go for the lower priced option only to have it wear out prematurely or fail when I need it most.