I have the Go and I'm delighted with it. Cut a whole lot of binding strips for my best friend a couple of days ago in minutes. I like the accuracy, the portability, and the speed of this type of cutter. I don't like rotary cutters, never did. I think my friend is going to ask for one for Christmas, so we'll be able to swap dies.
I don't waste anymore fabric than I did before. I could mess up cuts and measurements with a rotary cutter like nobody else!
I don't understand why, when something new comes along that might be a good idea, we have to hear all the negative opinions. I hope those who have positive experiences with any of their new toys continue to share with us. That's how I learn things and am able to move forward with my craft.