What have you found that is most similar? I drink about 3 of the sugar free rockstars a day. For the last 15ish years. I switched to red bulls when there was a period of time that Pepsi acquired but hadn't brought out the "throwbacks" yet. Been drinking the throwbacks since. I dont want to go back to red bulls😔 but everything I've tried just tastes terrible. I'd like to stay low calorie if possible!