I got the Cooper AT3's three days after they came out on the market this spring. I put them on my GMC 2500 and so far they have been great in the rain, hauling 10,000+ lbs loads, sand, mud, and the little bit of snow that we had. I have prob 15,000 miles on them hauling the boat and 5th wheel alot and they don't look as if they have worn a bit.
I guess that I will be the first one to say that the BFG all terrains are probably one of the worst tires I ever bought. I had them on a zr2 s10 and they wore out way to quickly. I went through 2 sets of them in 55,000 miles, and always had an alignment done when I bought them, and rotations every oil change. Don't try to off road with them in over 8 inches of snow or you will get stuck, they load up with snow and are like slicks. They also like to pick up big rock's, and will cause you to get BIG chips and dings in your rockers and door bottom's when you get up to speed and they let loose. The one good thing I can say about them is that they look good on a truck, but I will never buy another set of them. Now the mud terrains are a different story they are a great tire.
Do not buy TOYO open country's if you plan to drive in over half an inch of snow. They straight up suck!!!!!