Now that I've gotten a chance to really try out Neuro I can safely say this is a legit pre. Comparing it the Guerilla it's just a couple just notches higher in intensity. If you don't want an illicit day but want something more than just your daily, Neuro is the way. Nutricartel offers a 10% bundle with Guerilla, so grab em together and your set for a few months of workouts. Thanks Nutricartel. You guys ship quickly and throw in sample to boot! You guys are go to for all my pres right now, keep it up! A note on those on GPLs, try taking your pres 60min instead 30min before your workout. The peak will hit right in the middle of a 1-2 hour workout.