I'd like to add a comment about the edge geometry of the CQC9. The other knives in my EDC rotation (shown above, last photo) also have ATS-34 steel and were made in the mid to late 1990s. Both of those two knives (Terzuola and Elishewitz) are double V ground, and both have several minor rolls along the edge from the use I put them through. All three knives including the CQC9 have dulled from use, but only the CQC9's edge has remained clean without rolls.