For use on their rulers, which I love, is the True Cut ergonomic rotary cutter. I use the 45 mm Olfa the most but also use the 60 mm fairly frequently. If I didn't already have them I would switch to the ergonomic style. I did learn on one of The Quilt Shop videos you should cut with you pointy finger on top of the cutter pointed toward the blade. I will try that next time I need to do some cutting.