Grinders. The best?

I've got a metal single chamber space case one and a plastic one and I've gotta say the plastic's better. When the crystals build up in the metal one you have to scrape them out and shards of metal comes off at the same time. With the plastic on you can just get it out with your finger.

i used to have a bamboo one, with metal teeth

sometimes, when im alone at least, i actually prefer to break it up by hand on a frolf disc...i find it pleasuring, especially when im already high...kind of like meditation