Bernie,
The STOS sharpens very easily--I just use a file and then ceramic rods. The 8 point I shot with them I just file sharpened. One of the easiest heads to sharpen....I've never been able to get an edge on grizzlies that I was satisfied with, but the STOS is a piece of cake. You can't go wrong with the STOS....
Thanks everyone for the comments.....