Dude, I did not know you had signed up I have a Naniwa 10K super, 20mm thick, and it works pretty well, got it for $70 off ebay. It's soft, but nothing you can't handle with your skills, and cuts with good speed (ceramic in resin).

I have seen some people post that .25 diamond gives a harsh shave, but others enjoy it. I blended my .25 with .5 CrO from the outset, so I can't comapre myself.