Diff gears - recommended brands?

I bought a set of Strange/US Gear from Dr.Diff and set them up as the instructions said.
They are not noisy at all, just a very SLIGHT amount of whine on acceleration and coast.
They are 3:55s in a 489 case with a cone sure grip 8 3/4 and i used Timken bearings as well as the crush sleeve eliminator kit.
I'm very happy with them and the service from Dr.Diff.
Also, i'm using 75/90 Amsoil as lube with a friction modifier as well for good measure.