One of the best winter boots
My brother is a ski bum in Park City, I Live in Flagstaff. We're both at 7k in the snow and love the boots. I haven't had durability issues. The rubber on his cracked but was replaced under warranty. These boots keep me plenty toasty and totally dry. I'm sure the are plenty of other boots that are waterproof and warm too.
I would point out that these are not expedition boots. If you're shopping for Denali, hopefully you know better. But for an everyday live on a mountain, shovel the driveway, play in the snow boot, these are worth it.