I too have a 2wd 4.0L. This past winter we had several deep snows. I was really surprised how well my ZJ got around in all of it. I also use mine to pull a 12 hole dog trailer sometimes and we go right down the road never missing a beat. I also used it to pull a car hauler about 300 miles, with an S-10 Blazer on board on the way home. Had plenty of power to pull the trailer, although trying to get it stopped in a hurry was a bit tricky.
I wanted a 4x4, but when I found my ZJ it was cheap, had new brakes all the way around, and had been fairly well taken care of. I haven't had any major problems so far and hopefully that will continue.