I love the Rika! It's my absolute favorite stone in terms of sharpening feel, soft but not too soft, muddy but not too muddy... I've had a few 1k, but never been happy with them. Any recommendations for one similar stone to precede the Rika? Could be between 500 and 1k, the feel of the stone is more important than anything else. My only thought was maybe a Sigma Power 1k soft type?