Hi Eric,

I have the 12k shapton in your first picture. Is is from the professional series here. The M5 (in the second pic) is standard and about half the price here in Japan as the first one.

The 12k pro seems to cut fast for a 12k but I am still trying to confirm if it can give a good final polish or not (still trying to get my SS Dovo to pass the hanging hair test, or even to give a good smooth shave, but I think it is me and not the stone that is the problem )