To get down into the 1200/1500/2000 range, look for a good old traditional harware store (yeah, I know) or a machine shop supply. The compounds are just is good when you go below 600.

Thsi si one of those knife esoterica things that starts all sorts of arguments in a real small group of people. There are only about 5 mass produced knives that are convex ground. (Bark River, Fallkniven, are the best, IMO).