Try the Shaptons. The finish off of a 16k or 30k shapton is superior to that of a coticule. If you use the system i.e. stone holder, DGLP, and a progression like 8k, 16k, and 30k, you'll get consistent, repeatable, excellent edges. The shaptons are capable of flatness to a level well beyond the DMTs and it shows up on the finished edge. People who bring their razors to me for honing coaching, watch me use the Shapton system and then they shave the back of their hand. The result has been consistent . . . first a broad grin and then a giggle. It's THAT crazy sharp.

I also use the Pond mounted on top of a granite surface plate on it's own stabilization table so I get full performance the shaptons are capable of delivering.