Ivan Campos, for one. I have his American Standard Tanto in D3. It is a close to a 0 edge as anything else I own. D3 is extremely difficult to grind, according to Ivan; I chopped through a 2 x 4 with mine and it was still scary sharp afterwards. I think he works in mainly 5160 now. His Japanese-styled blades are impressive; have a look. You'll find him on this forum.:thumbup: