I don’t have many different kinds of hand sharpeners. In fact, I really only have one—the small sharpener made by Graf von Faber-Castell. But lately I’ve been using this sharpener made by Möbius+Ruppert, and it’s very good. By its weight you get the feeling that it’s durable, and since it’s made of brass, I don’t hesitate to toss it in a backpack or carry it in my pocket along with some change.
You can read more about this sharpener over at Lexikaliker (and thanks to Gunther for sending this to me). As is the story with many common objects associated with writing instruments, this sharpener’s form factor has a long history. Along with my opinion about musical instruments, this sharpener reminds me that all you really need is one thing that’s made well, and the rest will take care of itself.