The Rui HSS Santoku is the most versatile knife in the kitchen. 67 HRC, it will remain sharp for at least 3-6 months. 

*It is important to note that HSS is not a stainless steel, like Japanese high carbon steels, you will need to take care of it by wiping it dry everytime after use and put in dry place to prevent rust. However, if rust does occur, simply garb a sandpaper and grind them off.