I've had the Go since day one. I knew as soon as I read about it being made I had to have one, so it's a few years old and still works great. I would say buy from a rep that has the authority to instantly swap any die/mat/cutter that you may have a problem with.

I've had the Go for about a year now. It's OK, not something I use often enough to justify the cost in my mind. I guess, if you are having trouble with your shoulder it might work for you though. I would be sure and try one out before you decide though.