Hi Bill,
I have had my Schnee's now for about 20 years. The 13" I think they are called the elk hunter and that is mostly what I do here in Montana. I had them rebuilt about 2 years ago. New rubber bottoms, laces and liners. Came back looking like brand new boots. The air-bobs are different now, as they added a row of block tread around the perimeter for more roll-over stability. I still love my boots and put many miles on them every year. Not sure if this helps for your area or not. Whatever you decide, you'll be happy.