Search:

I would never use the same hone for knives and razors unless you are happy to lap the hone every time you start honing a razor after sharpening a knife. But maybe I am too obsessed with flatness.

Remember: buy cheap buy twice. Are you rich enough to buy twice?
If you have a sharp kitchen knife a sharpening rod is all you need. I have one from Sabatier, my kitchen knives never see a stone....