Below are the only two pre workouts I believe are worth spending money on. Its not just that I believe it, its actually just a matter of fact. Its all on the labels. Below are images of HTLT pre workout and Gorilla Mode along with the ingredient labels. Below those are the 3 most popular pre workouts on Amazon along with their labels. You can clearly see the difference. The top 2 are head and shoulders better than any other on the market and its all in the label. Instead of breaking it down myself I posted 2 videos from Derek at 'More Plate More Dates' who breaks it down far better than I could ever.