What whey protein should i buy?

Do not vote the other guys answer. Any whey protein source will suffice. Honestly you are just fine with whatever choice you make. Whey protein is completely nutritional, and is not some magical supp that is going to get you super jacked. I would recommend 6 star protein. You can buy this at Walmart, it is extremely cheap, not too bad taste wise, and is just as effective as any other whey protein source.