+1
I've installed lots of Richmond and Motive gear sets.
Never any issues.
Most times the Richmond set-up perfectly with NO changes to the shims, in diffs that don't have side adjusters.
The Motive set-up well too, but sometimes need a few tries to get the shims right.
Also AAM (American Axle Manufacturing) are good.
I stay away from any other brands, esp "off" brands that are less money.