I've looked into a bit as well and would happily run the Atlas. Yes, it's spendy, but damn - they're bulletproof. And to drop down to a 4:1 reduction for my low range would be t*ts. Especially for us 6-speeders. I've also thought about re-gearing in the axles, but that's more for power on the road and being in the right ranged on the powerband.
