I have the Shapton ceramic on glass 4K, 8K and 16K along with the diamond on glass lapping plate. I also have the Pro Shapton 15K stone and like these on glass Shaptons tons better. I find the 4K and the 8K are very similar to the Norton 4K/8K that I use and have had very nice results from them. I have experimented between the 16K and my Escher and still like the Escher a little better. I only use 10 strokes usually with either one. I have used the lapping plate on everything I own but the Syperco UF and it is amazing. The 16K is not bad though and with a little diamond paste or chromium oxide, you can get very nice results. I have been playing around with the Spyderco UF for months and still do not have consistent results, but have ended up with a few very nice shavers from it. I'll give it a try on another 100 razors and see what happens.

Have fun,

Lynn