For me, as long as the salts are clean, that's the important thing and that's easy to check for ourselves, we don't need to rely on company marketing telling us what to think. They don't even say where they buy their salts...even Advanced says that they've used Haifa salts for 20+ years. I wouldn't be surprised if Jack's, Gen Hydro, Athena, and the other popular Cannabis salts (that test low/bdl in heavy metals) all buy from the same company.