I wait until I have a quilt pattern I want to use and then buy the die or dies that will work with the pattern. I guess I use the 2 1/2 strip die the most, then the 5" charm square die. I really like the wedge and tumbler die. And the large rag die is a time saver. I have about 100 of the dies but I have been buying them since the GO was first offered for sell. For Christmas, birthday, etc. my family knew to give me dies. I had a list of the dies I wanted and they would pick one or two. I was always surprised at what dies they chose. Last new one, I got the Cleopatra die from my Grandsons. The only one on my list. LOL