Personally I think the BFGs and Nittos are overpriced. My brother works at a GM dealership and said that BFG recently changed the rubber compound in the All Terrains and have been have ALOT of 3/4tons coming back after getting new ones put on because they are really soft and squirly. I have no experience with the Nittos although alot of my friends are unhappy with their noise level and traction in the winter. The DuraTracs are AWESOME tires and not very loud, however, I dont have very many miles on the set I have so dont know how long they will last. I have no experience with the Hankooks either, but have heard VERY good things about them.
One thing you didnt mention which is always a big factor for me is the treadlife warranty. I know the BFGs and DuraTracs have none. Personally I have been running General Grabber AT2 tires, they are identical to the BFGs but the price is alot better and they carry a 55,000 mile treadlife warranty. Firestone Transforce AT or Destination AT are tires I have had good luck with.