It all comes back to the complaints about TT quality. Folks want a high quality TT but when you offer one they whine because it is expensive.
Quality costs, perhaps not the 3x of an Airstream but a certainly half again the current TT cost.
If you like an Airstream and can afford it, buy one. I splurged on a "Kromer" cap, and Bean boots because I like them. They will wear out just like their less expensive Wal-Mart equivalents. No matter, I like them, I need no other reason.
But in my case, even if Airstreams cost the same as standard TT. My DW still would not like the shape and I still need a slide.
Safe travels