Tested my spyderco tenacious on various cardboard and wood.....its got nice convex edge but knife loses its sharpness much faster than bm154cm or vg10......paying extra money is worth it ....i wish tenacious had vg10 blade....this chinese steel is ok but I dont liker it at all! Also 154cm and vg10 take much sharper edge much easier.........quality of steel is evident for sure!!!!!!!!!!