I sincerely hesitate to bring this up, but...
I have owned an '05 Interstate since new. When I first acquired the vehicle, I immediately fell in love with the B-van format and with the Sprinter platform, and I was in a swoon over owning an Airstream. Over the years, my enthusiasm for B-vans and Sprinters has held up very well. I cannot same the same thing about my opinion of the Airstream brand. In my early enthusiasm, I now realize, I overlooked an inexcusable amount of uninspired design, poor workmanship, and mediocre customer service.
Climbing onto the roof, one discovers amateurish, sloppily-applied sealant slopped around every penetration; Cheap, plastic sliding cabinet doors fall off as the liquid-nails-style adhesive used to install them start to dry out; Euro-style door hinges constantly need readjustment and reattachment; Plywood sub-panels rot as a result of invisible leakage from the refrigerator vent; Plastic "wood" veneer peels off everywhere; carpet and privacy curtains are attached using snaps secured using improperly-installed pop-rivits and need to be reattached using nuts and bolts that should have been there in the first place; wood door panels that never did line up very well get worse as they warp over time; poorly-installed PEX plumbing begins to leak at the slightest disturbance; penetrations of the Sprinter body for the water heater and other accessories rust everywhere due to missing paint treatment of the cut edges; cheesy AV components are connected to sub-woofer components that hum annoyingly due to improper shielding and cabling; Ironically, the chrome "AIRSTREAM" letters applied above the windshield slowly peel off in the wind; etc, etc.
Those of you who follow our friends over at the Airstream Westfalia site know how poorly the Airstream NAFTA mods contrast with the Westfalia-factory components, and also how those folks were dropped like a hot-potato after Airstream lost interest in the Westy product.
I don't mean this to be a rant, and I certainly don't mean to spoil the enjoyment of those who are still in the honeymoon phase of Interstate ownership. And, I do realize that 2005 was early days in Interstate production. But, I have looked carefully at current-production Interstates, and I am not at all convinced that things have materially improved in the intervening years. Airstream is an iconic brand, and one pays a significant premium for the privilege of owning one. But, I have come to believe that it is not at all obvious that one is getting the best-in-class quality that the brand should bring with it. As I get close to choosing a replacement vehicle, I will certainly choose another Sprinter-based B-van. I do not rule out that van being another Interstate. But it is by no means the only (or even the leading) alternative at this point in my search.