Most common calculators in the forum?

[hibiki]

My signature lists my HP calculators in good and working condition (1 piece each model). I use the HP20B on my desk and a simple calculator with basic operations (and sometimes I use a Soroban = japanese abacus). I used the HP12C a lot in the past.
I also have the HP360LX (not working), Sharp PC1211 and PC1500 (not working), Texas SR50A (working but no batteries).