I have a Lansky, and use the 20 degree setting on all my knives. I start with the extra course stone first, then work my way down to the fine stone. The first use of the extra course stone ( used when first sharpening ) can still take a while to get the initial twenty degree angle, as the original blade angle may be different. But once you get the knife sharp using the extra course stone, then you start working your way down to: course, medium, and fine. My knives come out razor sharp. When they eventually need to be resharpened, they will come out razor sharp in just a few minutes, by using the same twenty degree angle. If the knife isn't too dull when I put it in the Lansky, I start with the course or medium, then work down to fine. I have the Lansky diamond system. Be sure to use the honing oil. If you have the stone for serrated edges, the angle setting is thirty degrees. Note : You don't need to apply a lot of pressure when using this system. I also put masking tape on top of blade before inserting in clamp, thus keeping scratches off blade.