I'm sold on the Irish Setter Elk Trackers w/ 200 grams of thinsulate. They are never too hot and if I need more insulation, I usually have a couple of pairs of socks in my day pack. The Elk Trackers open up nicely for the additional bulky socks, so my feet don't get cramped.
Danners on the other hand, have just never fit me well and didn't feel go with extra bulky socks, but I haven't bought any of then in at least 10 years and probably won't be in the market for boots again for another 10.
