Arctic Fox may be good campers, but they haven't kept pace with a few of the other manufactures. They still use filon backed with luan for the outside skin. If any water gets in there it will delaminate and rot. Other top of the manufactures have switched to a high gloss fiberglass skin backed with Adzel that will not rot and has better insulation properties.
Arctic Fox has yet to use a nose cone for the cabover, Lance and Eagle Cap do. Not sure if that is a big deal though.
No ducted heat to the basement, only a fan that runs when the furnace runs. Being a full-time winter camper myself I don't believe that would be sufficient to keep the basement warm during a frigid cold spell. A switched fan and or ducted heat to the basement would be the preferred method.
I toured the Eagle Cap (when it was in La Grande) and the Arctic Fox factories back in the Fall of 2008. Back then EC was a superior camper for about the same amount of money.
Nothing against Arctic Fox, just don't believe they are at the forefront anymore.