I love this comfort cutter because it fits my hand perfectly and is so ergonomically designed that I can use it for hours while cutting out quilts and I have absolutely no negative reactions in my arthritic hands, fingers, or wrists. It also seems like it does not take as much effort as other cutters to cut through multiple layers of fabric. I have three of these cutters and I just wish they would develop the same in the 28 mm cutter.
I like using this cutter with the rulers. It gives a great cut and I think it keeps the cutting mat last longer. No matter how hard you push it can only go so deep. Love it