So right off the bat, it seems you have a misconception that a truck camper means you need a DRW truck. Yet you also seem to be looking for a basic camper which would naturally be lighter in weight, and not requiring a DRW truck, even for "safety."
A DRW truck is not the best choice to be exploring the Alaskan wilderness. An SRW truck's rear wheels follow in the same track as the front wheels, making traveling through deep snow and mud much easier. Each tire on a DRW cuts its own rut, so six ruts vs. two. Takes a lot more power and effort to charge through tough going, if you can make it at all. My DRW is helpless in deep snow, and it's a 4x4 with aggressive tires. Once the rear wheels hit deep snow, it stops. I can back right out, but the front end won't pull the whole truck through.
Ultimately what's "best" is entirely up to you. Everyone has their own idea of "best."
