If you want the greatest in insulation the BigFoot or Arctic Fox with special packages are probably the way to go for 4 season living. We have camped in the summer and winter and been comfortable but you will notice the extremes. I would not hesitate to be exposed to either in an Airstream but if that constituted the majority of my time I would consider the higher r values of arctic packages offered by those other manufacturers.
Heat pump works very well (not to be confused with a heat strip) The bathroom vent lacks heat, imo, the ac works well but would get the upgrade if possible. That fan John mentions is terrific. Picked up an Endless Breeze at the International and though I did not have electric for AC the direct breeze was refreshing.
I love our Airstream, currently a 27' Classic. In fact I have been accused of displaying serial airstreamist tendencies.
Airstreams are different, they
feel different. I don't recall any middle of the roaders posting here. You either love them or they simply aren't here on these forums.
