Bit of a necro, but booze never goes out of fashion.
Still a Rum person after everything I've tried so far. Works well depending on the type of day it is, dark or white.
But coming up a close second is Gin, a good Gin and Lemonlime Soda mix is fantastic, especially since its effin hot as shit here during the summer. And coming up as bronze, is the ol Vodka, any mix, but oddly enough, Vanilla Vodka with some Sunny D is a 1:1 Orange Creamsicle taste.