Are you literally towing in snow and ice? THen the M55's mentioned are great tires. I have 90K on my dually. If it is just getting around int he snow, the Toyo open country are ok, then again, here in the NW, one needs more of an open tread due tot he wet snow/slush we get. Back east where the snow may be drier, then it may do ok.
I would look more towards and M55 than a toyo, altho the toyo would be the least open tread I would look for. The transforce, might as well by the HT version, just slightly more open in the middle tread and 2/32 deeper from the get go. No real difference in my book.
Marty
92 Navistar dump truck, 7.3L 7 sp, 4.33 gears with a Detroit no spin
2014 Chevy 1500 Dual cab 4x4
92 Red-e-haul 12K equipment trailer