I have Shapton Glass stones starting at 1,000 grit progressing to 16,000 grit. I am looking to add around 500 grit stone, mostly for sharpening knives. Some reviews indicate 500 grit Shapton Glass is pretty soft, so not sure about that. There is also 320 grit Shapton Korumaku stone. I like splash and go, slow wear and fast cutting from Shapton Glass stones. So, looking for something similar.
Any suggestions?