I've been using Mystic Island Kratom for years and I don't know why I didn't switch to Oasis sooner. The only reason I did so just recently was because of a payment hiccup, so I did it totally on a whim pretty much, but I'm glad that issue popped up. I never realized there'd be such a difference in quality, but the kratom from Oasis has a more earthy, fresh taste to it - not that it tastes *good*, as no kratom should taste good, but it's just not dry or old and there's clearly some level of quality difference. I was surprised to find that the shipping went from coast to coast in 2 days, from California to New Jersey. Shipped the same day as they said, and more thought and care was put into the packaging than others I've experienced. It adds a nice touch of comfort to know that they're associated with the American Kratom Association and perform tests on their batches. And it's kind of impressive that, despite that, their prices are the same or even cheaper than those who don't even perform tests. The only reason I had been anywhere else was ignorance on my part, plus going with my comfort zone and what I had gotten used to, but I'm glad I tried them. I'd highly recommend them, I can't think of anything negative so far.