Ultimately, all AT boots are built with one of two priorities: the Up or the Down. For those more focused on the down, the Black Diamond Shiva boot is a very good choice.
For those who are looking for the outstanding warmth, waterproofing, and dexterity of a trigger-mitt design, the Black Diamond Guide Lobster Mitt deserves to be on your short list.
At 115 underfoot, the women's-specific 2012-2013 Black Diamond Element shines in powder, but it also rips groomers and (with a slightly forward mount position) handles crud.