Sorry, I can't help with an Airstream B Class, but we have owned 3 Pleasureway B Class, so can comment on a B.
We travelled many miles in our Bs. We loved the ease of travelling and hooking up. Very easy to drive. However, I like the luxury of a Suburban or Avalanche and an AS tt. Our Bs were basic truck cabs, not very quiet. We towed our AS over 20,000 miles in 07, and do not miss the B, except the built in generator.
In the Bs, we preferred the regular twin bed set up, not the sofa that made into twins. The main reason we don't have a B now is the size of the bath. I think the AS B has a better bath, especially shower space. We travel, not camp. Just used them to sleep and drive, but with our two small dogs, the B was a nice way to go.
We also used the B when we had to evacuate for hurricanes. We did spend 4 nights parked in one place, and did just fine. My husband and I do not watch the same tv programs, so even in the B we had two tvs with headsets.
I'm sorry that I am not better at writing what I am thinking, but hope you get the idea. We loved our Bs, but love our tt too. That, because it is an Airstream. Now, we would not own a B, A or tt that is NOT an AS. If you have any questions or want to be talked into or out of, please let me know. One of the Bs we only had for a short time as the beds were so bad. Lesson learned. Another we traded to get a 6 inch wider bath. Little things like that. But, a B is a "no fuss" way to go.