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2 types of stones ?
There are about 80 different strata in finish grade Jnats alone :)

It will really come down to the individual stone as to preference.

You don't need a Maruka stone to finish razors. Ballpark, $300 Asagi or Namito razor size stone is ample.

Ah yes Maruka kiita is like saying Red Ferrari.

Jnats are cheaper than yellow green Eschers :p