Pyramid shelters come highly recommended in Alaska, such as the MLD Duomid, Supermid, and Oware models. Light, roomy, and can use your trekking poles for support.
In July, I will be going on a two week trip to south central Alaska that consist of camping, backpacking, and kayaking. We are using shared group gear and decided on the new MSR Hoop 2 person tents. They are heavy but can take some abuse in all kinds of weather.
The Tarptent Scarp 2 or MLD Supermid would be my choices if I were able to pick my own gear. It comes down to compromises: A big single wall pyramid or a traditional double wall dome that will be used in a rain forest like environment.