"Organic Kratom USA" is a vendor approved by the American Kratom Association (AKA), which sets a high standard for vendors. The company prides itself on customer service, reliability, and ease of access. However, it's important to note that it's difficult to verify whether or not their kratom is truly organic. They do have a page dedicated to third-party lab test results, where the purity of their kratom can be checked. The company offers same-day shipping and the ability to create your own blend of kratom before ordering. Despite these positive aspects, the claim of being the "#1 leading provider [of kratom] in the US" is subjective and may vary based on individual experiences. Overall, the company has a good reputation, but the "best" vendor is always going to be subjective.