I finish my knives with a 6k stone. and then strop on cardboard. Though once I get and 8k or 12k stone for honing my razor I will probably use it for that.

Do you have any hones that you use on your razors? That would be my suggestion. If you want truly sharp knives I would check out the dvd's by Murry Carter:
Amazon.com: Murray Carter Introduction to Knife Sharpening DVD: Home Improvement
Amazon.com: Murray Carter Advanced Sharpening Techniques DVD: Home Improvement

He is a master knife smith who learned his trade in Japan studying the techniques of the Katina makers. This guy really knows what he's talking about. Here is his website: Welcome to Carter Cutlery | Carter Cutlery

At the end he dry shaves his couple month old beard with a knife he just roofed his house with! Of course he sharpens it during the video while demonstrating the techniques.

His ideas may even help you with your razor honing!