I have the "GO" and I love it. It's so nice to be able to cut out a queen or king size quilt in just a few hours and the precision cuts allow the pieces to fit together oh so perfectly. For me, the "GO" is a big plus because I have "art" in my hands and there were days I was not able to use my rotary cutter.
My husband loves the "GO" also because he no longer has to try to figure out what to buy me for my birthday, our anniversary or Christmas. And, I no longer need to return something because it doesn't fit! LOL