When I first started quilting several years ago, I found I couldn't measure and cut very good. My DH bought me the Go-Cutter the first year I started; however, I found that I don't have every size die needed to make some blocks. So, I bought the Guidelines 4 Quilting rulers. And have the June Tailor rulers! I have found that ACCURATE cutting, ACCURATE scant 1/4 seams and squaring up make for lovely blocks and quilts. It's worth all the extra steps in the end!