When I go for a shaving sharp edge, I want it to shave cleanly and easily with no drag. However, using a Grizzly file, they have a single tooth sharp file teeth edge with a rounded narrow side, they can be used to get a file/steel edge or a file/serration edge. Both seem to work about as well as shaving sharp for me, but with the Hill broadhead directions, there is a difference between merely rough versus keen, if in doubt with those go to the Tom Mussatto method. With the old Grizzlies one can serrate them as well, but the serration should be pulled from the filed side back to front or from the flat side front to back to get the serration angling forward to get the most immediate blood. I do that as well with my single bevel Hills. Recently I have found that the old tan Bears seem to have a more durable edge with a filed edge than with a honed edge, I am guessing the reason is that it is a softer metal.