Personally I hate bigtrea ( Bigtrea premium 1.5% ). I use kratom mainly for studying but this one is just ... uhh. At low doses ( 2g ), it gives me anxiety and that unpleasant 'kratom feeling' with no mood boost. Anything higher is just too sedating for me. But Imho, as a **pain reliever**, it's one of the best ones, doing its job effectively even at smaller doses.