The Sharpener You Buy Should Match How You Sharpen
Every dull knife argument ends the same way โ buy a sharpener โ and then the sharpener sits in a drawer because it does not match how the owner actually works. A current roundup of pocket knife sharpeners is useful mostly for sorting that out.
The Spyderco Tri-Angle Sharpmaker takes best overall, and it has earned the spot by not changing. Introduced in 1978 and still one of the company's best sellers, it uses four ceramic rods that slot into holes at 15 and 20 degrees per side, which covers the 30 and 40 degree inclusive angles most pocket knives run. You hold the knife vertical and draw it down the rods. The tradeoff is time: getting an edge can take more than twenty strokes per stone, and the specialized rod shapes mean replacements come from Spyderco, with a diamond upgrade that is expensive. What you buy is consistency โ the angle is set by the base, not by your wrist.
The rest of the list covers the other habits. Smith's 8-inch dual grit combination stone is the budget answer and the traditional one. The Work Sharp Pocket Knife Sharpener is the portable pick for touching up in the field. The Work Sharp Ken Onion Elite Mk.2 is the electric belt option for people with a pile of knives and no patience, though it demands learning the guides, the belt selection, and light pressure. The DMT Dia-Sharp 8-inch stone is for freehand sharpeners who want a flat diamond surface and no jig at all.
The decision is not about grit numbers. It is about what you will actually do on a Sunday afternoon. If you want a sharp knife with no skill, buy the fixed-angle system and accept that it is slow. If you want to sharpen anywhere, buy the pocket sharpener and accept that it maintains rather than repairs. If you own twenty knives, buy the electric and learn it properly.
Verdict: the Sharpmaker is the safest first purchase for someone with several knives and no technique, and the DMT stone is the honest long-term answer for anyone willing to learn freehand.