I have several and have been using the Olfa 60mm for quite a while. For my latest quilt which is a Courthouse Steps I've been using my ruler with attached 45mm cutter. Cutting lots of 1.5 inch strips. I still have my original Kai cutter which I now use for batting and paper. I have an ergonomic 45mm which is great when my hands ache. Somewhere I have a Fiskars but there is a problem with the spring. I think I have another Olfa floating around as well. DH just made my Pegboard triangle so I should know where they all are in future.