After having some foot problems, I had to swap out all my boots with wider models. After trying on lots and lots, the only brand which seemed consistently wide enough were Vasque.
Unfortunately I get the feeling they are discontinuing their mountaineering line. But the last generation were pretty damn good and you can still find them around. I've been wearing these the last few months and like them a lot so far:
http://www.sierratradingpost.com/Produc ... essed=true
The sole is Vibram Mulaz which is my favorite, good grip on rock. They have a rear bail, but none on the front, so they are best with hybrid crampons. The Vasque M-Possible works with step-in's, they have a speed-lace thing which you will either love or hate; they have a little insulation as well.