I bought the Gingher blades and boy, what a difference to me, compared to the other blades. So sharp and last so long. I bought Harbor Freight blades and IMO I didn't like them at all. It was like I was putting on used blades. So now I have a bunch of HF blades that I'll never use. I bought a bunch of Gingher blades and haven't had to change my blade out yet. I love to cut and when I cut, I put my strength going straight down, not going against the ruler. I think that might be one reason why my blades last long. I never get nicks from the rulers because I don't push against them. But I truly believe in the Gingher blades!