Guys im new to here, I just found Body Fortress Whey Protein Isolate at Walmart and i was wondering if it is any good, Im currently on Isopure but the cost of the B.F.W.P.I is way cheaper, also a friend of mine told me that Super sport isolated whey protein from GNC is the same as B.F.W.P.I. Please let me know if i should buy it?