This uses protein isolates as its primary source. What this means for the average person is that it is 90% pure protein based on weight. You can't find any other source that is more find grained and effective. Some of the advantages of this product is that it is able to get your body a large amount of protein in each serving without adding all the fat, cholesterol, lactose and sugar. 

If your serious about taking supplement, this is a must have. It is a little expensive, but still provides good value. It costs about 50 bucks for two month supply which still isn't too bad. For the quality you get it is worth it and you will see results.