I tried this thinking ON was a great brand. I heard good reviews of their Gold Standard so I decided to try this after seeing the BOGO deals. It's sincerely the worst protein I've ever had. I've tried ton of different whey and this is unquestionably the worst. My stomach noticeably bloated a few inches, I had bad stomach aches and the grossest farts ever. Don't be sold by any flashy deals from this inferior product.
I can't help but feel that they added 'Performance' to this product just to help it fly off the shelves. I wasn't too impressed by the results or the protein content. If you're going to buy a protein powder from Optimum Nutrition, there are plenty of better options out there.