Pomegranate Rockstar isn't bad, but if I need something to really get me going, I'll drink a Redline. It tastes like ***, but I'll be dammed if that doesn't get your blood flowing.
I like old fashioned Red Bull. Tab, of all people, has an energy drink. If you can get past drinking something out of a pink can it tastes pretty good. LOL
The only time I every drink the stuff is during the show season when I have to drive really late at night. I remember slamming quite a few during the drive back from Spring Break Nationals.