I guess I will add my experience with the 16K. I notice I clean my stone [with a scotch bright pad] after 3 or 4 razors as it seems to cut better when I do. I don't lap [Just a few swirls] until session is over. As was said even being a polisher it cuts very fast. When in final polish mode I use the 16K then the 30K and always use CrO after the 30K. I have shaved directly off of the 30K and still felt a little ragged. I really like what the CrO does to the ultra sharp 30K blade. I do about 30 passes with the CrO.
bj