I got the ACCUQUILT-GO too. Wanted to be able to do better cutting as I have a shoulder that drops on long cuts. Am right handed and no matter how I do it, my left shoulder drops which causes the mat to move, and I end up with cuts that are good where I started but OOPS by the end.
Walking up the ruler didn't really help either, still had the off cuts.
One reason I am getting the Quilt Cut 2 - RULER stays put! I also wanted to be able to do other kinds of cuts.