The Goodyear Wrangler Silent Armor and BF Goodrich All Terrain TA KO both have the mountain snowflake symbol for extreme snow and are both less aggressive then the Duratrac.
I love shopping for tires because they make such a difference in performance. I am running the Nitto Terra Grapplers because I wanted the peace of mind on their load capacity. They are great actually, but they are not rated for extreme snow and I haven't had mine in snow very much yet. I am running the Silent Armor on my other truck that does not carry the camper and they are excellent tires. They were not available in E load range in the size I wanted so I went with the Nittos. The Wrangler All Terrain Adventure looks pretty similar to the Silent Armor but it doesn't have the extreme snow rating. Why I don't know, because it does have good siping.
I am starting to think that for most of us, an all season tire or the Michelin AT/2, which is a very very mild all terrain might be the best of both worlds. We go down the highway for a lot of miles with a lot of weight; a squirmy mud terrain doesn't fit the use of our trucks. As long as I have 4wd, I'd rather have quieter tires. Maybe I'm getting too old (and I'm only 31!).