Well gents, after having given the binsui a far working out, I've decided it's a bit slow. I have a DMT green, a 5k shapton. Could I turtle off and get a Chosera 1k? Yes...yes I could.

But I'm still on my 'nature boy' streak. So......

What are some better choices for coarse NATURAL stones--preferably waterstones. By the way, if I dig around in the attic, I'm sure I can find my old Arkansas soft stone. Beyond that arky stone, what is else is there coarse natural stones?