My Go is over 3 years old and still works great. New dies just came out! The Ribbon and the Ric Rac die. I have them pre ordered already. Stock up on the die cutting mats on sale as they get worn fast if using the same mat for all cuttings. There is always a sale on Go products somewhere online. You will want the various dies for the Go so take the price of new dies in consideration. The dies are good for hundreds of cuttings. I know my strip die has probably cut over a thousand strips so far and still sharp as new.
I have the Alto Quilt Cut 2. I bought it before the Go was available. It's nice but I still have to use the rotary cutter and line up my fabric just right to get accurate cuts each time.