Not sure if the underlying thread here so far is really obvious

JimmyHAD - "Used on an already shave ready razor it enhances the edge/feel perceptibly."

Ace - "and be good to go after the 12K Naniwa"

Shooter - "Very few razors can handle that stone & fewer people even will know what I am talking about with that statement"

Geezer - "As always, steel, hone, water, and hand make the complete honing process"

Double0 - "The Suehiro benefit most from a prefinisher like a Naniwa 12k or Shapton glass 16K. The Zulu does benefit also, but it can go from the 8k to the Zulu with very good success also"

Zib - "I normally go from my Shapton 16k to the Suehiro 20k. It does benefit from a pre finisher"

Note that most everyone is explaining how they get to the stage before the finish,