Some great points have been brought up.
Danners by far are the best cold weather boot. And yes, the average soldier can get several years use out of them, which translates to 10+ years for the average bear, easily.
But something I have to bring up, is that footwear is terribly personal, seriously. Something that fits or works for someone else, may not work as well or in actuality cause you all kinds of problems.
Fortunately, really cold temps, less than 10 deg F there usually isn't a lot of standing water, thus getting gore-tex boots wet is moot. Keep in mind though, if you get them wet, they will STAY wet for a LONG time, basically until exposed to some sort of heat.
Personally I have extremely diaphoretic feet. Translation, my feet sweat A LOT. Matterhorns, Danner Ft.Lewis, and Danner Acadia were too hot for me, unless completely stationary in subzero temps. None of the three are road march worthy in my opinion, unless you intend of replicating the retreat from the Chosin Resorvior. I used polypro sock liners inside of gore-tex socks and green canvas jungle boots. Worked like a charm for me. Could always carry two more pair of gore-tex socks if my feet got wet, boots dried out fast.
If it's extreme cold you're expecting, get set of Danners. Even if you don't like them, they, other than green jungles, were the only boots I regularly saw soldiers purchase used.
------------------
"Women bring life into the world
and much death, for they sway the
destinies of men." -Anneas