You get 4 free Volcas! The catch: They're all the same one. Which 4 Volcas are you stacking up?

Hypothetical question, as I'm waiting on the arrival of a Bass and Keys to get a triple Bass + Keys set up running. I was honestly considering just 4 Basses but I wanted to check out the Keys. You could obviously do a lot of different stuff with 4 separate syned Samples, but I'm curious if anyone would choose a quad set of Keys or the FM2, or another.