I know this is my first post but living Alberta, I can say I have experience with Goodyear Duratrac's. Best tire I have ever used and currently run them on all 4 of my vehicles.
If you do the chalk line test across the tread and get your pressures right,rotate them regularly and you will get some excellent mileage out them. The last set I replaced went 86,000 miles. Those were on a Cummins Dodge Ram 4x4 that ran highway and off pavement here at the farm. Zero flats, zero anything. I would actually still be running them but felt it was safer to replace given they were getting down to the wear bars. Get the pressures right and they will wear nice and flat.
For snow and ice they are unstoppable as far as I am concerned. A lot of times where you feel that 4wd is needed, you can easily get by in 2wd, 4wd really only giving you that extra edge.
I have run the older BF's over the years and honestly nothing wrong with them at all, I just couldn't get any mileage out of them.
The oil guys and hot shot truckers swear by the Duratrac's so something can't be to wrong with them.
Jeff