Instruct: Classify the given Amazon review into its appropriate rating category
Query: One of the best stimulant preworkouts.

I've tried nearly a dozen or so different preworkout supplements, and Koala Freak is definitely the best of them all. Plenty of caffeine to get you energized, but the best part is the extra pump ingredients; Koala Freak is the only preworkout I've tried that ALWAYS enhances my workouts. Even if you aren't feeling the energy due to having a long day, the amazing pump you get will ensure a great lifting session. It's a little pricier than others, but it is worth every cent.