I have gone through over a dozen of coticules, I have yet to find one that I would consider as a good finisher in the range of a quality thuringian. Best way I have found to date to see where a coticule sits in regards to grit is to finish on synthetics to 8K, then switch to the coti. The coti will either improve the edge or degrade the edge, either way it will change it. You can decide from there if it's a keeper or not. If you pass one on, just be honest.