HAD has hit me. I have a nice new set of Naniwas on their way to me and I just pushed the button on this:

Special natural Tomae very hard stone from Kyoto Hon Yama, hand-selected by Murray Carter. Best for razor sharpening.
GRIT: Approx. 30,000~ 40,000
DIMENSIONS: 5.4 X 3.2 X 0.8 inches
WEIGHT: 1.25 lbs.

I bought it as Murray seems to know a thing or two about sharpness and because it was inexpensive. So how did I do? Any opinions/experiences relating to Murray Carter's stones? What sort of finish should I expect in comparison to my coticule?