Muck Woody Max...just based on what keeps my feet the warmest based on cold outdoor temperature. I hunt the mountains a lot here in N. Ga and the Muck's are not good for walking the mountains. I have Danner 1000 gram Thinsulate boots for hunting the mountains and they are not as warm as the Muck's for me. But if its cold, and I hunt anywhere the Muck's can go that is what I wear.