Do a search here; VG-10 has come up a number of times. It is the only stainless steel in my experience to hold an edge as well as high carbon -- specifically, Carbon V. A buddy of mine and I skinned a black bear, he with his CS North American Hunter in Carbon V while I used my Fallkniven F1. It is a little more difficult to sharpen than carbon steels but that isn't a big factor with diamond hones. It is similar to other high-end stainless steels (BG-42, etc.), but has an additional component, cobalt, which is supposed to enhance the effects of the other alloying elements. I believe Spyderco's tests indicate it is a better edge holder than ATS-34, and Fallkniven switched from ATS-34 to VG-10 after exhaustive tests. A particular heat treatment (supposedly a trade secret) also has a good deal to do with VG-10's qualities. It involves cryogenic treatment, according to Fallkniven. About the only criticism I've heard is cosmetic: VG-10 has an 'orange peel' appearance if examined closely, and doesn't take as high a polish as some stainless steels which can be buffed to a mirror finish. My F1 takes a scarey sharp convex edge and holds it magnificently. Fallkniven's web site carries data on the independent tests it had done of VG-10. It is confirmed by those as a very strong steel, in addition to its other qualities.