I just bought a pair of them last week. A bit on the expensive side, but I would rather spend the extra money on my feet and not have to worry about them when I am in the backcountry. That being said, I really like them so far. There isnt much breaking-in required compared to the La Sportivas and Scarpas that I have owned before. I like the added height to the boot too. You really dont notice that its there until you really need the extra support, like side hilling.
The only thing that I am not real pleased with is the added insulation. We havent had a whole lot of warm days up here, but my feet have overheated when I wore a moderate hiking sock in them. The tend to heat up real fast when you are hiking in warm climates. Shouldnt be to much of a problem for me in the long run though as I dont expect to lace them up when its above 60 degrees or so up here.
Ron