Top three calculators ?

[Uli]

Not for fun:

1. Privileg LC 814 PR
(In School, when I was 14 years old. We were the first who did not learn using a slide rule. The calculator was programmable with 46 steps. Each click was a step. I learned to do everything in 46 steps).

2. HP-28C
During beginning at university. I learned UPN. And I liked the missing =, so nobody else wanted to use my machine.

3. HP-48G
At the end of my university time. Wonderful machine. Unbreakable.

For fun+work, today:
HP-41CX, HP-71b, HP200LX