I can add that I have a Hart steel square point 7/8, about three years old, so it was before they were sold to Classic shaving. It has the initials of the maker on it. I don't count, but I have a box that has about 15 razors in it that are my shaving rotation razors, and thinking about it, I can't remember the last time I put the big Hart on a stone. It's always a go to razor, especially if I have a tough 3 day growth. So I reckon the Harts hold a better than average edge. I do every so often give all my go to razors 4 laps on a chromium oxide strop, but the Harts are hard steel in my view, so that may also be a factor in its longevity. I have two other Harts both 7/8 but round nosed, I'll write a count down next time I do hone one, just to see how they fare. I use the square point more than the other two because I don't like the very round nose much.