Gusty was my childhood favorite, so I'd definitely pick Gusty if I could only have 1. Realistically I'd probably get both Gusty & Gypsy, but not reverse Gusty.
I like quality enamel pins... A LOT. I already collect a lot of things, so I have to sort of keep it under control, but if I go on a trip I will usually pick up a pin as a souvenir before I'd buy a mug, keychain, magnet, etc.