The Citation beats the hell out of the others for cold weather bigger furnace and ducted heat throughout the camper.Also it's one of the only campers that has a thermal break on the inside covering the alum frame.Down side they quit making them a while back.
I know of a guy that bought an Fox 1140 and put it on too light a frame, he actually popped a wheel off on a corner.
2008 F350SD V10 with an 2012 Arctic Fox 29-5E When someone tells you to buy the same rig they own, listen, they might be right. When they tell you to buy a different rig then they own, really pay attention, they probably know something you don't.
Had a Citation, outstanding in cold weather...Be sure to check that the AF has a ducted heated basement...Note that the Citation's 'Polar-Package' was present whether a decal is present or not. Polar Package decal was simply an attempt at better marketing an already present same build spec.
If you stay west of the mountains in the winter most TC's can handle the weather close to the water. I ski every Friday with my Arctic Fox and have no problems with freezing or keeping warm at 4000+ feet.