First shave with my fast coti tonight - outstanding! I did a progression of 2k Shapton Pro to light coti slurry then dilution to 30 laps on straight water. HHT3 mostly, couple spots HHT4. Very very smooth shave, had to lift the spine a bit higher than with edges from some other stones, but great shave nonetheless and absolutely gloriously smooth ATG. Alum block sting was maybe 1/10 if that. I wasn't expecting it to be so good since it's so fast. Even better that it's an 8" x 2" and I got it for less than 1/3 the asking price! Feel like I won the lotto! I don't even know if I'll buy any more cotis, lol. Yeah...right!