I like Cooper AT3. Great on road and trails, and surprisingly adequate in mud that I've got into on trails.
I've several times driven in 4" deep mud in 2wd (open diff) without airing down while crossing a muddy creek bed. Never spun yet, though there were a few minor wheel slips (like a quarter turn or so) going up the slightly inclined muddy bank on the way out.
Warning: I'm notorious for making a post, then editing same post several times, adding info each time, or correcting typos.