There is very little waste using the Go. I have 1/4" waste around the outside cuts. Those that cover the whole die with fabric have lots of fabric waste. That is done for demo purposes when time is more important then fabric waste.
Die cutting machines are not gadgets, they are machines and all I have used are very well made. They are so nice that my guild has several for the members to use. Members have to supply their own mats and dies if they want different ones then what the guild has. All the donation quilts we can finish in a year can be cut in just a few hours.