mexican redi-jects are the only sus i trust. they very in color because they make them with the cheapest vegtable oil available at the time. i think the switch between cotton and peanut oil but could be wrong. also the actual amount in the syringe may vary. if you mix it up with your deca like i do you'll notice they are a little under dosed. as far as anything else for humans from mexico (Deca redi-jects are legit but not worth the money) i would only say the sten is good. It smells like shit and is cheap. almost painless but must blast 2cc eod.