Coffee upsets my stomach, so I find myself drinking energy beverages somewhat regularly. SoBe's "NoFear" is pretty easy to find, and in my opinion, is the best-tasting of the mainstream choices available. "Bawl's" is another favorite- comes in a distinctive cobalt-blue glass bottle, and has a unique, refreshing flavor. Somewhat harder to find, though. (They have them at the 7-11 across from Walgreen's... I think they're around $2-ish). Can't comment on the 5-hour energy, but I'm interested to see how it worked for you.