the usual choice nowadays is Sprite, though it's exclusive to late night shifts. we don't have soda at home.
when i was away on campus a vending machine had pic related, and i would die to try it again. i don't really drink any soda other than sprite and fanta, but i really liked pibbs. drank it religiously, lot of nights dedicated to a movie and a pibbs. unhealthy lifestyle, and i paid for it in energy, but man it was nice.