If you're going torun one set of tires year-round in Alberta for DD duty and some moderate wheeling, Duratracs are hard to beat. They'll do about 80% of what a good radial MT will do when wheeling, will behave well on the pavement, and do very well in the snow and on ice. I'd say that they're a better all-round tire than the BFG AT's - I've run both on various vehicles.
Another choice would be the Toyo M-55. They'll be more durable, but won't do as well off-road - or in ice and snow.