Cor-Performance by Cellucor. I know their a sellout mainstream brand but their new BCAA is awesome! Tastes great, mixes better than any other BCAA I've ever tried. Not a 4:1:1 but has a secret ingredient alpha-hydroxyisocaproic Acid (HICA)! Metabolite of+ + . Great Product! Modern is a great BCAA too for the amount of servings you get but don't plan to drink the unflavored by itself.