This is hands down, the best herbal prep tool in my collection. To be honest, I put all my others in a box. I even found a few seeds, and they were not damaged. With most grinders, if a seed gets past you, you'll end up smoking it.
Just bought my second one within a month of each other. The easiest grinder to use and the different size grind plates are awesome. I've bought alot of grinders over the years and this one, hands down, better then them all. Thanks flower mill...