I could use a good pwo last time I had a good hit was the original jack3d and I needed 2 scoops. Im extremely stimulate tolerant so no current pwo does it for me anymore. Ive tried hyde, shatter, arnolds pwo, noexplode, heck ive even bought straight caffeine pills and took 2 at a time and nothing. Im 27 years old 6'1" 190lbs. I Gym it up 5 days a week been going to the gym for 2 years. Currently im not taking a pwo im taking creatine mono, whey protein, mass gainer, and eating all the time. ill give updates and if it works for me trust me everyone will know.