I’ve tried about all the mini crock sticks I could buy. They can put a good edge on your knife. I have since tried all the small diamond plates I can get my hands on. I have in the past year come to agree with Ragnar of Ragweed Forge.

“Two Sided Diamond Plate
If I were starting over, and buying a single tool to sharpen my knives, this is what I would get. It has a medium surface on one side and a fine surface on the other. It's 4" long, 1 1/4" wide, and less than 1/16" thick (.055"). $14

If I were going to add anything, I'd get something for a super fine finish or strop. The Viking whetstones shown below would be excellent. The $1 ceramic sticks listed below would also be good.

The single sided plates shown below are a close second, and actually fit a wallet better. I prefer the slightly greater length of the double-sided plates however. “

The diamond plates do a better job of getting a good edge on my knifes. I sharpen them with the medium side if needed. Then I sharpen them again with the fine surface. When they are paper cutting sharp, I strop the blade on cardboard or leather. You will then have a blade that will slide through paper very smoothly. It still will not cut wood as well as a Mora but that is another story.

Ragnar’s two-sided diamond plate is sitting in my PSK right now.