Il get back to you more when I've tried all the strains properly. it was quick international delivery and they sent me a free sample, which is nice. I've tried the red md and borneo and both of them definitely did the trick with decent effects, all I have to compare to is KUK kratom which a lot of people seem to think is weak or low quality but I never had issues. Like I said though I only received them yesterday so I'l get back to you properly on the effects in a few days when I've used more