I'm a multi boot kind of guy. For walking, I have a pair of 8" Gore-Tex lined Danners. They are uninsulated because I overheat easily, especially in difficult terrain. When deer hunting when its not too cold, usually bow hunting, I wear an old pair of knee high rubber boots from LaCross. They have Thinsulate, 200 or 400 grams, I can't remember. I like the rubber boot because it doesn't hold scent like leather and fabric. The ankle fit makes them not want to pull of in the mud, but it makes them a real pain to get on and off. In cold weather stand hunting and ice fishing, I wear my trusty old LaCross Iceman felt pacs. They are no fun to walk in, but they are warm. There are more modern, lighter extreme cold boots on the market, but mine haven't let me down.