As a general rule their are two COO's that produce top knives, Germany & Japan. I worked previously as a chef and own these brands; Henkel, Trident, Fdick, <these are German. I have several Global knives (Japan) & several from Brazil. Cheap knives are easy to sharpen but dull fast, the best high end knives are very hard steel and stay sharp longer. Every knives need an 'edge' put on it by a stone, grinder etc then you maintain the edge with your 'steel' like you see butchers do. You don't use the steel to make the edge but do use it to keep the edge sharp. I'd stone my knives about every month or so using them daily but would use the steel 10-20 times a day.