I'm still new at DE shaving. Got over my fear of the Feather. I used a Feather blade in my Super Speed this evening and had a great shave. In the past, I have used Astras and Gillette Blacks, but these feathers are something else. I like the Astras as I've gotten some really good shaves from them. I didn't like the Gillette Blacks that much but maybe I'll give it another try. But these Feathers, wow!