I currently am using Proteins + from Genuine Health for my Post Workout Shake. http://shop.genuinehealth.com/ProductSelection.aspx?ProductID=2620&CategoryID=85 I'm looking to switch to a Whey/Casein blend and I'm thinking I am going to try Cytosports EvoPro due to it's relatively low fat content. Does anyone know which methods (Cross Flow Microfiltration, Ion Exchange or Cold Filtration) Cytosport uses to derive the protein isolates and the Casein (Milk Protein Isolate, Membrane Casein, Calcium Casein)? I'm fairly certain the Casein is Milk Protein Isolate but I'm not sure on the Whey. Any help would be greatly appreciated as would any low fat Whey/Casein blend suggestions. Thanks in advance.