Buying a 710, do I need M390?

M390 is well in wear resistant and highly corrosion resistant. On the other hand, as far as toughness is concerned S30V will beat M390, S90V. Even has some edge against resilient D2, or old benchmark of stainless steel, 440C.
 
I have both and to me the exclusive is easily worth the extra dough. The D2 lacks the corrosion resistance of M390, and the handles on the exclusive are really sweet. Go for it.
 
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