BFG AT!!! Great tire that WILL take abuse and still give a good ride. Ive got about 15k on mine with lots of riding on trails and rocks, as well as highway and they are still in great shape. My parents have them on every vehicle, as well as his work trucks too. Cant give an exact mileage how long they will last since we havent gone through a pair yet, but my boss got 60k out of his last pair on his work truck. I paid just under $900 for 4 265 75 16 last summer and they are 10 ply as well.
Cant give any personal experience on other bfg tires as far as performance and durability, but my uncle has a pair off nitto terra grapplers he's put quite a few miles on as well.