ive used the ampuoles.if you want pain these are the one to get.i cant say for the 10cc vials,no experience there.i diluted with oil but that only makes ya have to inject more of and more often.i hate this crap.i would get rid of it if i could[my stash that is]my first amp,i was in pain for a week!it felt like i got hit with a baseball bat!it gave me itchy tits but then i only used it two weeks.i wound up getting somthing else with no pain.