I have the Go and while I have not yet used it much, I have really loved it when I have. It cuts great strips and squares. Everything is perfect and everything is the same size. I can't get that accurate with my rotary cutter. The Accuquilt web site and YouTube have videos to help learn how best to use the Go. I did outline all the die lines with a sharpie so that it is easier to place the fabric. Didn't have much fabric waste when I have used it.