energy drinks

What are the best energy drinks that I should be drinking. Right now I'm drinking a bunch of high sugar energy drinks and it's helping the boost my energy, but halfway through my workout I crashed hard. I realize that this sugar is not doing me any favors can you suggest a better option

I was out front of my gym in I ran into somebody's I haven't seen since College and we had some discussions about nutrition since one of them is in really good shape. He was telling me how he cut out all energy drinks and how after he did that his results got much better. I drink two to three...