i know mdx3 is legit no doubt, had lots of people use it with all good success. m-drol seems to come from a good company and has a good COA, nutraplanet seems to think they are good enough to sell so thats says alot more than some of these cheap knockoff companies. only feedback/time will tell. i would feel confident in buying it but if dont, just wait a while until more feedback comes in. check DA forums to, i think their are a few logs there as well.