We are on our 2nd Arctic Fox--the 1st was a 28 5T--have had a 29 5D for quite a while--bought it new-ordered from the Factory. I am guessing it has somewhat N. of 30,000 miles on it. The big trip was to Muncho Lake, B.C. just S. of the Yukon Terr. from So. Calif. I am definitely an advocate for Northwood products--have toured the Factory in La Grande. The campers are not only well built-they have features built in that a lot of other campers do not like heavy duty shock absorbers, a huge I beam frame, etc. Northwood builds their own trailer to put their campers on. They are built as a 4 seasons camper-this is not an add on feature. I have added some things like a 100 watt solar panel, a genny, 2 12 volt outlets, a rear hitch receiver, double pane thermal windows, a pull out queen sofa bed, etc. Lars:)