Five years ago I bought a green Belgium coticule, and thanks to Bart and others here on the forum, used it to hone my growing collection of razors. It worked fine, but in the last year or so I have been wanting to do more with my honing and have been reading and shopping around. Today I went to Chefknivestogo.com but then found a place called Sharpening Supplies and saved myself $85.00 on my order.
I took the plunge and bought myself some Naniwas', a universal holder and a DMT D8C lapping plate.
I bought a 1k, 3k, 5k, 8k and 12k Naniwa.

I used my green coti at a number of different levels that worked for me. I got there basically by trial and error but found a method that worked quite well for me. By altering the thickness of the slurry, and I think this altered the cutting level, I was able (by my dead reckoning and testing), TNT, TPT, etc. along the honing horizon, I was able to reach a reasonable shave ready state.
Now I am looking forward to using my new Naniwas' along with the pyramid technique to see if I can edge my honing up a notch or two.
I will keep you posted.