I had an edge finished on FeOx, real mirror finish which tree tops hair without barely making a sound. But is indeed harsh, especially against the grain. About 10 laps on water with the coticule left the edge unbelivably smooth. Im sold already, even if im not good enough to use the coticule to its fullest potential, i still have a way to get a real nice smooth edge^^Very nice coticule s guys . I have not shaved with a coticule edge at least six months due to using the Naniwa s and finished edge was 20 k Suehiro. Then last night I went back and re honed one of my straights pure dilucot and I have to say the shave was unique. I forgot how different the edge of a coticule actually feels . There is no hone I have have come across that can produce a feel on the skin that a coticule can if successful .