If you're used to opiates, powered leaf kratom might be underwhelming. I've never used real opiates so I can't say for sure but a kratom high is fairly mellow, although still quite nice. However, if you're willing to spend a bit more per dose, UEI kratom would be a stronger high. From what I've heard from other people, a fairly strong dose of kratom is at about the same level as a moderate dose of codeine or a low/moderate dose of hydrocodone. Kratom is so cheap that you might as well order an ounce and try it out. If the high is good enough for you, it will save you money and you won't have to deal with withdrawals. I use kratom every other night and I never have any sort of cravings or withdrawals from it when I run out. Some people can find it to be addictive but in my experience, it hasn't been an issue.