X2 on BFG A/T... I've been happy with them on the Fj40. Good road manners, quiet, good off road... Suck in mud I'm told.
I've heard side walls aren't the strongest if you're playing on the Rocks... TOYO are tougher and last longer... But for the price, I went BFG, since they'll age out before the wear out in all likely hood.
Right now I'm torn, I can get a 4 BFG A/T KO2s with about 500 miles on them (225/75R16) for the price of 2 new tires. I plan to do zero off road in the E350... But snow/ice/noise/economy/control are my primary objectives... So I'm not sure they'd be my best option... Sometimes I wish I had more dually rims... They'd likely be better in deep snow, but changing tires is such a PITA IMHO on a 9k 'van' with duallys.