I got a 7" (180 mm) Twin Cermax Santoku a few weeks ago from amazon for $130. Couldn't pass it up. I always do research on things I've already bought rather than on things I'm going to buy so right after this knife got here I started looking it up. The core steel is their M66, which I guess is proprietary, is (according to at least one reviewer) zdp-189. Whatever it is it is very hard. The OOTB sharpness is the best I've seen. The bevels are asymmetric (90-10 or 80-20, something like that) and this is a new thing for me. I think I like it.