I think a lot of people purchase their first Alembic thinking "this is going to be the one" if only due to the cost (especially if #1 is purchased new). Given the number of Alembics owned by most of us who post on this site , however, I think it would be safer to say, "#1 for the present moment."
I know that when I purchased my first Alembic, a used Distillate, it was the most I had ever paid for a bass. I thought at the time that it would be the only one. Then I had Mica and company build a Further for my son's college graduation. Of course, if he had a new Alembic his father also needed one, so I had a Signature Deluxe custom constructed. I could imagine that I’d ever need or want another bass after playing it for the first time. But then…a beautiful SC appeared for sale, and a 6-string Europa. Then of course I just had to see for myself if the differences between Series basses and all other Alembics was as pronounced as Series I and II owners claimed (they are). The purchase of a Standard point Series I followed and I was once again convinced that this was the one. Fast forward to earlier this month. Flew down to Chicago and drove back with a short scale Koa Series I that I purchased.
The only Alembic I’ve ever parted with was the Distillate because a long scale was just too long for me. Though I play the Series basses more than the others, all are unique both in their tone and the way they play.