Im debating between NSI CreaPure® Creatine -- 5000 mg - 1000 grams (2.2 lbs) - Vitacost (creapure and respectable brand for 22 including shipping) Amazon.com: 1Fast400 Creatine Monohydrate Powder, 1000-Grams: Sports & Outdoors (No creapure, dont know about the brand, 15 bucks total because free shipping) What do you think?