A Barber's Hone because that is what it was designed for.. they are fast and easy
A Chinese PHIG very good price, and the right one can do exactly what you want..
Any Synthetic 8k-10k hone because they work better at what you want to do than a true finisher...
A good quality Thuringen because when used for this they give a buttery smooth edge..
The good quality Coticule they are very good for this, but watch the hype on these stones..
A good quality Japanese polishing stone not a finisher, much harder to find though...
Keep in mind any of these other then the barber's hone require practice and have a learning curve, beside the waste of money trying to find the right one with the naturals...
:gl: