I've got one D3V, 2 3V. I MAY be able to see a difference in edge-holding with D3V. I don't know if that is due to "edge stability," toughness, grain structure, or what. I'm not even sure I see the difference. I can NOT say that i've seen a difference in corrosion resistance, but that is probably because I don't use any of them that much. I'm just generally not that impressed in the (D)3V over other really good steels, like SR101, INFI, M390, 20CV (in various sizes, for all those steels). Or for that matter, VG10 (which I've used a lot in Fallkniven blades).