I know. I have plenty of them. I have chosera from 600 to 5k. And suehiro 10,15 and 20k. King is slow and soft compared to a chosera. And even a harder chosera isn't a great choice for super steels. Unless you have loads of free time. And the king need constant soaking. Chosera and diamond plates are spray and go. I know.you can.keep the king in water for when you need it.