Andrew,
I've owned a pair of Canadian Danner's for two years now. I picked them because of the insulation and the high ankle support they proved, not to mention the airbob soles they have is an added plus.
I break them out in August and put them up in May. I have had them in all types of weather conditions, and they keep my feet warm and dry. I'll wear them out when the temp is right at zero. If I'm hiking or not sitting more then three hours. IF I sit longer or the temp drops I switch over to a pair of 100 Below boots.
Needless to say they are out standing boots and you get what you pay for. Dad always said if you find a pair of boots you like by two or three more pairs, because they'll stop making them. We'll I'm saving for them.
The cheapest I could find them was from DNR Sports (USe your search engine) I think I paid $170 something for them.
Good calling,
Alaskan Yoter