For years I've relied on a 1k, 5k, 8k and 12k Naniwa progression and gotten excellent results. I noticed that SharpeningSupplies.com has a line of water stones, in four sizes, made in the USA. The 8 x 2-3/4" XL are available in nine grits, from 220k to 10k. The idea of USA made water stones interests me. Does anyone have any experience with these stones?