King Stone could mean King Brand. Of the man-made waterstones, King is the brand I have seen most often.
I agree on how much waterstones kick butt. If you want to SEE why they do, go find Leonard Lee's sharpening book. Lee is the guy who started Lee Valley tools. He likes to study tools. Lee took stones and chisels sharpened on various stones to a lab and had electron microscope pics taken. The pics show why Japanese waterstones cut so well! I think some of the coolest pics, though, are the ones where rust can be seen on the edges. I try not to touch the edges of my blades anymore. Rust is an edge killer, and there can be edge-killing rust on your blades right now from the acidity of your fingers, yet you can't see it.
Geez, that was a bit off track! Congrats twoblink! I will be buying some King brand stones next year myself. Lee Vallyey sells King brand stones, and I plan on getting an 800, a 4000 and an 8000 grit stone. Japan Woodworker is another great source for different Japanese waterstones. THey even sell some natural ones.
MelMut: nice line there! And very true too. I was thinking along those lines today when I reread the "deadly sharp" thread. SHarpening used to be a skill that someone learned. Now with sharpening gear like the Edge Pro, sharpening isn't really a skill. I think that people now tend to think that if they don't have a gizmo, they can't sharpen their knives. Japanese sword polishers are testaments against that,though. These guys are living proof that you can learn to rub a metal stick with a rock by hand and make it sharp! It just takes practice.