I use chromium oxide .5 micron paste from hand American on leather right after my rika 5k for all my nicer double bevel kitchen knives, if I just do a few light strokes it leaves a very nice edge with some bite to it. If I over do it or use too much pressure it can make the edge too polished and/or rounded off. I also loved the edge Dave put on my Hiro, I think he used .25 micron diamond spray on leather after the rika 5k. I think if you have done a good job up through the 5K just about any stropping compound will do well. The reason I like the CrO2 paste is that it seems to last a really really long time on the leather, and being a green paste it is very easy to see that you have an even coat on the leather. On the softer steel knives I leave out for housemates and guests to use I only go to 1200 then a light strop for burr removal. My straight razors I go Rika 5K, Naniwa 10K, Balsa loaded with 1 micron boron carbide, leather with CrO2, plain felt, plain leather. Happy stropping!