I would avoid this brand and any others that have soy lecithin listed as an ingredient. This will raise estrogen levels in your body which will negatively affect your testosterone production and serum testosterone levels which you would hope to maximize while adding lean mass.

Secondly they advertise as being GMO free which is virtually impossible using soy products produced in the US. The fact that they are using soy to begin with is because it is a cheap emulsifier subsidized by the government.

I would go with organic whey. There are many companies now selling natural whey. Here is an example, http://www.amazon.com/Raw-Organic-Whey-Certified-Protein/dp/B00APPF0LE/ref=sr_1_7?ie=UTF8&qid=1366258801&sr=8-7&keywords=organic+whey