I am not a Pro Comp advocate, but I am very impressed with my 31" Procomp A/T's. They do extremely well on the trails and rocks. They are nice on the street as well. I bought them over the BFG A/T's because a certain 4 wheel shop had a buy 3, get 1 free deal. Save $120! Not to mention the tires have a 50K mile tread warranty, plus an available "no questions asked" replacement warranty option from not mentioned shop.
That's my 2 cents. When I change tires, I will be going to 33" BFG M/T's, more than likely.
- Robert