Whats going on JohnnyB, Ion exchange generally tastes and mixes much better than a Whey Protein Concentrate, and is much lower in fat and carbs, while providing more protein per serving. I prefer to mix Ion Ex with milk as well. as for building muscle both Ion and Whey Protein Concentrate can achieve the same effects but you will likely need to consume a lot more WPC to accumulate the same amount of protein intake.