Sep 09, 2010 7:11 PM GMT
So I just finished up with GNC's Pro Performance AMP - Amplified Mass XXX and thought that it did a pretty decent job of helping me to bulk up (and it tasted pretty damn good too). Was thinking about switching it up and wanted to get people's opinions on what they think is the best protein product for mass gain. I hear the Gaspari and Optimum Nutrition brands are pretty good. What's your opinion?