I was using the 60 because it could cut though many layers at once but then I tried using it to cut strips in my strip tool and it keeps bumping the plastic slots. So I must've ruined the blade since it now skips over 2 layers in spots. I'm having a difficult time finding the blades for it locally & was looking into what Joann's has on hand before deciding, either that or order a multi-pack of blades to make it work. Thanks for your input.