I think at one point or another, I've tried all energy drinks. I've mostly had Coke and Sprite but I rarely drink them any more, mostly just on special occasions.
I absolutely hate Monster/Redbull... The taste and smell of them are just awful, although I'm pretty sure it's just because i usually have them mixed with vodka or jager on a night out so I've probably just associated them with the disgusting taste of alcohol. Either way they make me gag.
My opinion is that in moderation, like on special occasions, it's ok to have energy drinks. It's not at all healthy for the body and mind to rely on them.