The Big O at was the worst tire I have ever run on my truck. Do not waste your money on that one. I have used the BFG AT on all my DD and they are hard to beat. I got 60k miles on my last set and I tow all the time.
I'd give my left nut to get 60K from BFG AT's on mine. Maybe 30k, rotated every 5k, monitoring air pressure, no burnouts, good alignment, even wear, no cupping, etc. (2002 eXcursion 7.3)
Love the traction and handling, just not the wear. I'll be lucky to get through the winter on my current set, I think I'm about 25k and there's only 1/4" tread left. I've had to chain up to get to my cabin, which I typically don't have to do (pic is of the 315's I had on it, now I run 305's)
I put a set of the BigO AT on my last work truck (2006 F150supercrew), they seemed better than the Toyo AT's which are on my current truck (2008 F150supercrew).
The Toyo's pretty much such in the snow, but I did manage to get up to the cabin last weekend without chaining up...though the roads were blown and had a nice hard pack, rather than being slushy/soft.
The '06 is up in Idaho this winter, I'll have to check on the tires. I hope they are rotating them.