I tried these a few years ago, maybe it was the Polsilver, Wizamet I'm not sure. In the Tech it wasn't sharp enough. In the 1967 Super Speed a little better but not the top of the top tier I remember. Not very sharp at all and just ok smooth. I got these from RBC via Amazon and 5 were missing from an open box in the mailer. Amazon is sending me 10 more. Did they change? Fakes?