I don't drink energy drink usually, mostly just water but when I do I drink Dos Equis....sorry I mean Green Dragon. Its more or less Red Bull but like $0.88.
Dos equis is delicious, I like the amber kind in a nice frosty mug with a big lime wedge!
Sugar free redbull for my vote, most these drinks have some pretty gnarly crap for your body and after a few years it will take its toll. Not to mention recent studies show its also addictive!