An Energy Drinks Roundup?

NecroWraith asks: "Ok, I'm sure most folks on Slashdot have something they eat or drink that helps you stay awake far beyond what your body wants you to for, whatever reason: late night gaming sessions; late nights at work; or late nights in the pub. The big one now is energy drinks. I swear I see a new one on the shelf every week. Rockstar, Red Bull, Monster, Hansen's, Jolt, Red Jak, Lost, Sobe, Bawls, Amp, MDX, the list goes on. So, what have you tried, and what do you like? What tastes best? What works best? Which one is the best deal?"