What you say about quality pressings being good pills may still contain a kernel of truth but it hasn't been true since like '97.
Additionally made by underground pharmacologists made me crack the fuck up. Speaking as a former MDMA cook I can tell you that the quality varies from lab to lab, I worked in a damned good one but we were quite rare, based on my not at all insignificant experience with MDMA that making clean product is not as important as the loss in product that comes from doing even halfway decent purification throughout the process. The goal is the purest raw product but it is almost never refined afterwards. If people won't clean up their product when the customers can see it they sure as hell aren't when it's getting mixed with fillers and dyes.