I have just got to say that the Sigma Power Ceramic Waterstone 13,000 Grit
I have been reading reviews of it for so long now...
But it really has lived up to me expectations.
For those sharpening nerds out there (like me) check out this fact:
this 13,000 has a grit size of 0.74 micron vs.
0.94 micron for the Shapton 16K Glass Stone!
It is also available for about £70.
It quickly CUTS and produces a mirror finish.
Sticky sharptastic. Lovely feedback on the stone.
Really I have finally found my favourite finishing stone.
This is Stuart Tierney (Tools form Japan) giving a very good account
of how stones compare: