I like a good glass or crystal over aluminum, slate, or glass. There are lots of good ones of those but a couple that I have a hard time to quit playing are Gooserbat High Standard crystal, Misfire buckeye burl glass over aluminum and a Spring Allure crystal over slate. Plenty of others from Yingling, Daryl Slaton, Brumfiel,Rugged and numerous others I have forgotten. But the first ones mentioned just make me smile when I play them