I have all the strip dies and they are so useful because you can cut strips, turn them sideways and cut squares or rectangles. This saves me so much time! I have been collecting dies for 4 years and have quite a nice collection. If you majpkenquiltsnwith charm packs you would want the 5" square die. As you go along you will see what you need. I have purchased many from EBay, you can find great prices there and they are brand new, usually free shipping.