I contend over and over again lee makes good stuff. if after using lee gear and you are getting substandard results, my money is on operator error more often than not.
Lee products are not without their limitations (as are all brands) that are inherent to their designs. As with all volumetric powder measures, there are limitations. Stick to powders and techniques that have been discusses ad nauseam (every issue with lee gear has been resolved here on their own website lee faq
lee stuff works just fine plain and simple and the ppm is no exception.