We are still loving our 19' ZR2 diesel. 21k so far. Love the torque, love the lockers. Once you have a truck with lockers, you won't want one without them. It's like a winch. They seem expensive at first but if you ever have to pay for an extraction - even 1x, they will pay for themselves and not seem expensive anymore.
Lockers & winches fall into the category of " Better to have it & not need it than to need it & not have it !"