Thanks for all the replies, guys!

Last night, I experimented with a razor that's always given good shaves, but never great shaves. (Admittedly, I've only used the razor 3 or 4 times.) First, I gave the razor a rough-ish, ~8K barber hone edge. Then I finished it with this stone + water for 50-60 laps before test-shaving.

I had my first great shave with that razor. Wow.

In a few days, I'll take a different razor down to a Naniwa SS 8K edge, then finish on this stone. I suspect the results may be just as impressive. Fingers cross'd.

Regards,
Chris