I love my June Tailor slotted ruler. I'm sure the Stripology one is better, but this is what I have and is what I use for almost everything. Yes, it has broken in two places, but it repaired easily. Mine is 12" wide with half inch slots. I also have the smaller 1/4" one, but I don't like it. Too many lines (slots), too small and not as stable because of so many slots. I also have the slotted half circle which made a Drunkard's Path quilt easy to cut.