I'm going to re-gear the suburban since the 4.10s aren't cutting it for towing on the highway. At 65 mph (the medium towing speed), I'm just outside of my engine's power band. I'm planning on 37" MTRs in the future, and after doing the math, 4.88s will get me where I want to be - just over 2000 rpms @ 65. Also, 5.13s are mighty tempting.
What are the better gear manufacturers out there, and which ones are to be avoided?