A few months back I bought two new stones which Rob picked out for me superbly. One a very fast hard La Dressante which i asked to be picked out for chef knife use for work although it does do a great job for razors. Second a la petite blanche which produces great edges which I like . Recently I found a vintage thuringian at a car boot sale for a bargain price of 2 pounds which does produce a keener edge than i can get on a coticule. However it stings considerably more when the alum block is applied in comparison to the coticule and especially the "La petite blanche". So my preference is strongly on the side of the coticule. Any body else found the same thing or is just me with regards to coticules and thurungians.
Michael
Michael