I have the regular Big Shot. My friend has the Go and loves it. I'm considering one die for the Big Shot, it's cheaper than the Go, and since I wouldn't be using the Big Shot for anything else, $20 doesn't seem like a large amount.
It would just be the 2 1/2 inch die since I'd have to cut a lot of them. I got rid of most of the Sizzix stuff I had since it was too limiting. Kept the Big Shot for embossing only.
Friend is trying to convince me Go is superior. Maybe it is for most things, but when I can't design my own, it's no good. (I own the Silhouette Cameo should I want a custom applique and I usually do.)