Red,
I know that water produces a very nice edge. When I have experimented around water produced some of the best edges. But, they do not seem to last. A few minutes after they are done they look awesome, a little while later they are so/so. Then they do not seem to hold up. I have never tried to varnish them to see if it helps it hold up, this might be the answer.
I do agree it would be great if everyone posted a pic of the edges they got with each product.
Aaron