I would never drink any energy drinks, if you need an energy drink to give you a boost, why don't you just try taking care of yourself instead, it's got no bad consquences and is purely good for your body. If you need energy throughout the day, you most likely either have some form of chronic fatigue, aren't getting enough sleep or are malnourished and probably dehydrated as well...
I don't understand why people drink this shit all the time, it's sooooo bad for you, it's bad for your teeth, it's bad for your heart, they either contain obscene amounts of sugar and other useless shit, or they are sweetened with aspartame which is awful for you. There is no good reason to be drinking these energy drinks, just eat a healthy diet, drink enough fluids, and get enough sleep and you should be fine unless you have some underlying problem (which energy drinks do nothing to honestly help you with)....that's my two cents.
If I feel lethargic or something, I eat an apple and some wheat toast with peanut butter, gives a huge energy boost that lasts without any of these harsh peaks and comedowns that these energy drinks give you.