I think the strip cutters are the bread and butter of this product. With strip cutters you can cut borders, bindings, sashings, squares, and diamonds. I probably use the 2 1/2" strip cutter the most because every quilt I make needs binding.
I absolutely love the applique dies. I have an embroidery machine and most of the applique dies have embroidery designs so you can do machine applique in your embroidery hoop, using the die cuts. I love doing applique this way.