Northstar, Outfitter, Hallmark, and Alaskan are the ones worth considering. Alaskan is going to be hard to find, expensive, and a little old fashioned in materials and construction with only a 15 amp system and no inside shower. Northstar is wood frame, non basement construction, but should be the easiest to find used. Hallmark construction is state-of-the-art, composite frame with options for interior material. Outfitter is also composite/aluminum frame construction and both Hallmark and Outfitter have basements which should be a consideration for extreme cold weather camping. There's really not much difference between Hallmark and Outfitter, particularly shopping used, where the options you get are not negotiable. Another camper to consider if light weight is important is the Four-Wheel Grandby. I personally would choose Hallmark or Outfitter, but it really comes down to what's available within budget and driving range.
