Michael,
I've had experience with the Nexen N2000 which I did not like at all (I barely got 2 summers out of them) and WinGuard SUV 235/65/R16. As odd as it may seem I have had the WinGuards on my '01 Montana since Oct/2007. Not only are they very good in the snow,,, I was impressed with how well they grip in the rain so I kept running them year round. I'm not sure of the mileage on them but they are holding up surprisingly well having run them over 2 years straight with regular use for work. Judging by the tread left I will not be surprised if I get another 2 full years out of them.
Rick...
Edit:
As canaboost mentioned,,, Wallmart.
National Tire Wholesale in Delta also carries them. It's a decent place with good service. I've been going there for a few years now for my "normal" vehicles. They don't do large rock crawler type tires.
You might want to ask for Phil. He's a decent fellow to work with. If you want good service don't tell him I sent you.