This discussion is (to my mind) makes a great and realistic contrast to something I read - not sure where, maybe CN - about how easy it was to move a 12" Meade LX200. Having had, and sold the 10" and then the 8" version, I could not disagree (not with John re a 12"Dob necessarily) more.
When you have different levels and narrow doors to navigate, portabilty becomes essential, unless you have a permanent installation.
I'm now living in a flat and observe from my balcony. There are no steps to get outside and I have a wide sliding door, and not far to go. Without that the AZ100 would have been a non-starter.