I use BFG AT KO and i did alot of offroading. If your only going to be on snow 2x a year maybe go with a low end AT tire. I would not spend alot on BFG's for that amount of non offroad driving.
Although i think i would buy the BFG's again just because they are so damn tough. I have gotten my moneys worth and more.
I have had screws and nails in them and havent even noticed until i took my truck to get it 'checked up' for any unseen damage. I once had a flat and was able to drive it to the auto parts store to repair.
Just some tough as tires!