The specific BCAA supplement that you should take can depend on a number of factors, including your fitness goals, dietary restrictions, and personal preferences. It's generally recommended to look for a BCAA supplement that contains a balanced ratio of leucine, isoleucine, and valine, with a higher amount of leucine. You may also want to consider additional ingredients or flavors, and choose a supplement from a reputable brand that has been third-party tested for quality and purity. It's always a good idea to consult with a healthcare professional or a registered dietitian before starting any new supplement regimen.