SF Red Bull is my energy drink of choice, but I don't drink them any more. If I need something in the morning I have coffee or espresso/cappuccino (i bought a maker) and I drink a lot of tea, mostly green or yerba mate.
There's actually this boozed up energy drink called Sparks that's really good. It's like drinking a full throttle with 7% alcohol content. My roomate loves them because it combines everything he loves about liquor and mountain dew and gaming. Good stuff.