About the shape -Santoku means 'Three Virtues' or 'To solve Three Problems'. The three virtues are meat, fish and vegetables, or slicing, dicing and mincing depending on your interpretation. This means that the Santoku is an all-around knife, suitable for the amateur home cook and the professional chef alike. The heigh means good clearance for big hands, while the relatively short blade can be wielded by anyone.
About Masakage Mizu - Dubbed Mizu (water), these blades have a blue/black kurouchi finish giving the impression of cold, deep water. Paired with an oval cherry handle and a not too fancy plastic collar, these knives are great for the cook that wants performance without blowing their budget.
Aogami (blue) carbon is my kind of steel- super easy to sharpen, takes a brilliantly sharp edge, cuts like silk and patinas beautifully. Since the blade is not stainless it requires a lot of care, making it great for anyone who takes careful care of their knives.