As a gunsmith: Luger (each one hand-built with files and a steady hand)
As an operator: HK Mark 23 (I get them for free, so what's not to love?)
As a prop fan: Desert Eagle (It's portrayed as the biggest, baddest gun)
As a gun lover: Desert Eagle (It makes a big hole with a big bang)
As a gun hater: Desert Eagle (It costs $2 every time I pull the trigger)