My cousin is a chef and the King Hyper has always been one of her favourite stones. I've used it myself a few times as well and it's fast with a very nice feedback. It's a really nice stone to sharpen on.
I’ve olayed with several 1k stones this year. The King Hyper was recommended it and I like it. A quick soak and your off to the races, very little load up, nice feedback and does it’s job quickly. It’s a keeper.