I have never tried any of the "energy drinks". I have drank coffee all my life from the times when I was so young I don't remember when I started. Coffee is not an energy drink for me. I drank coffee as a young boy for the reason my parents and the farmers I lived with boiled water to make it safe and made coffee with boiled water for every meal. I drink it now, as always, because I like it. In fact I drink coffee with every meal including supper, when I drink two or three cups of coffee every meal. It never stops me from sleeping every night.
I did learn one coffee problem. When I was just a very young boy, drinking coffee every meal with the adults, some the older men used to tell me, "Kid, drinking all that coffee will stunt your growth". They were right. I only grew to about 6 feet tall. I believe that had I not drank all that coffee when I was growing, I probably would have grown to 8 feet tall and become and NBA Star.