I have to say this. I had 1 whole clear shot (drank both doses) today before my cardio workout along with 900mgs of l-tyrosine and 500mgs of Chocamine. I had one of the best three mile runs of my life! I actually felt a little euphoric. I've never had this much energy, not even with ECA!!! Nothing touches this stuff. I would say it is easy worth 4 bucks bottle. The weird thing is is that I felt pumped!! I think that RPM my have a run for its money. If I had to choose between the two, I would have one hell of a time deciding! The only thing that I regret is that I didn't buy a whole case (only bought one to test).