I have both the June Tailor and the Stripology rulers. I actually prefer the June Tailor. It is thinner, and cheaper to buy than the Stripology, and I like that I don't have to fold my fabric. For me the Stripology has too many markings, makes for easy mistakes in cutting. Those Martelli rulers look like you have to have several to make the cuts you may want to make, and they sure are expensive. I'll stick with my June Tailor.