Vodka is actually my drink of choice because I don't hurt much the day after if I stick to one type of liquor. Last night I stuck to Baybreezes and after a couple glasses of water I was feeling ok today.
When I first started drinking, I would take straight shots of Absolut Citron and suck a lemon wedge dipped in sugar right after. Yum-my!

Now, I prefer Absolut Mandarin...
Beer is good too, but it makes me feel really full, which sometimes leads to getting sleepy. Champagne kicks my ass the next day, but it's a great buzz during.