The Go is as important to me as my sewing machine. My newest die is the ribbon die. It makes a great border. I use the tumbler and rag die the most. I also use the 2 1/2 square die and strip die a lot. I usually buy a new die to make the shape I need for a quilt pattern. I keep a stock of mats on hand. When I find a sale I stock up. The circle die is a fun one to have.