I'm with Laura. You have the best boot in the world but if it does not fit ****you**** it is no good.
I currently own a pair of La Sportiva EVO, which I have used on winter day climbs in SoCal since 2007. They are very narrow in the toe and are suited for those with low volume feet. I've been using them with Black Diamond Sabretooth crampons without any issues.
My next pair will be something with a little bigger toe box but I can't seem to kill these things.