I would definitely go all leather if you are going to be in a lot of snow. I've used and abused a bunch of different Crispi models. Tall leather boots will be pretty darn stiff and heavy though. I have a pair of Lowa Tibets that are all leather that I've warn a gob of times in deep snow. I treat the leather with Nikwax before trips with lots of snow and never had wet feet. Tibets get a lot of great reviews. They are heavier than all the mid height Crispis I use. I cover lots of country while elk hunting and lighter boots are definitely a plus when there isn't snow. I've had good luck with Crispi Wyo's and just bought a pair of lighter weight Crispi Thors that ought to be superb for early season hunting since they are a chunk lighter. I've worn the Wyo's on several sheep and mt goat hunts and they've held up very well but a tad heavy. My guess is the Nevada's may be a good all-round boot for snow plus other hunts since they are all leather. I wouldn't suggest insulated boots unless you are going to spend 80% of your time sitting or you may sweat a lot.