4.88 Gear Manufacturers?

[guruerror]

I recently performed the following mods:

K&N cold air intake
Gibson shorty headers
Flowmaster exhaust
Cognito upper control arm leveling kit
Cognito HD OEM-style tie rods
Cognito pitman/idler kit/support
Bilstein front shocks
37x12.50x17 BFG Mud Terrains

With the 37s the truck feels like it can't get out of it's own way. I've read through some posts regarding changing the gear ratio. I'm leaning toward 4.88s...most of my on-road driving is below 70 MPH and I rarely ever tow, so 4.88s seemed like a good choice. (feel free to chime in on this...as I do a fair amount of off-roading too)

My main question is; what is a solid brand to look for when shopping for gears?