Any pot will kee kee slate being tough. Aluminum, crystal or ceramic imo are best. I'm not a big ceramic fan, not enough rasp for me in the ones I've tried. The sound isn't exactly the way I like either. That being said I've got a Kaiser that when run w a Torman black locust striker is pretty good.
Normally on the rest of the pots I use dymondwood to kee kee on a pot