Red Bull is disgusting.
Vault to me tastes watered down.
The real good stuff I've only been able to find while I was in Seattle.
Its the new Rockstar Juiced. Not the orange kind, we've had that for awhile. This stuff comes in a purple can and has... Guava Melon in it, I think.
Its 70% juice so it doesn't kick your metabolism's butt like all the rest do and it tastes fantastic. I just haven't found it anywhere but Seattle.
Nos is another good one. Throttle in a bottle!