I have the Go and bought it at retail price so it was very worth it for me to have it as soon as it was available to buy. My hands, shoulder, and neck were bothering me when I would cut a lot with a rotary cutter. I have most all the dies. I buy them on sale at different online shops. I like the tumbler die, strip die and HST dies the best. I recently used the chisel die and it's becoming a favorite. I use the hex die to cut my hex papers for English paper piecing and fabric hexes. The circle die is excellent for three sizes of yo yos. My Go is three years old and still works like new. Not one problem with it. The mats will wear out but I'm still using a lot of the first mats I bought. They don't cost much. The Go is a tool that isn't for everyone but I'm sure glad I have one.