I recently got a pair of Danner Canadians and am pretty impressed so far. They are 600gr Thinsulate, and I've been wearing them in -20 weather with Thorlo socks with favorable impressions.
They were "right out of the box" comfortable, and by the end of day one they seemed like I had had them forever!
They seem to have plenty of support for me, and both my ankles are pretty bad from numerous sprains. I really like the bob sole versus the vibrum...I free like I could walk up a wall with them.
They ain't cheap, but what is these days? And they are made in the good ole' US of A!
Todd