Found this to be average after using Shatter SX7 Black Onyx... Even though the serving size is almost double i.e. 21g to that of 12g of Shatter, the release of energy is quite slow, the pump and focus is a little less than the adequacy level and even the jitters of beta-alanine flowing into your bloodstream hasn't been felt so far... Well, this could be because I believe in intense strength training and cardio/abs and my expectations are too high after my previous choices of intense pre-workouts purchased. Nevertheless, these are my observations and what I felt, things definitely vary for others as others have different lookouts in different things.