The Angle sheet (for sewing diagonally) and the Pounce were my worst purchases. The Angle sheet wouldn't fit properly on my original machine (probably would be fine on the Bernina, but by then, I had thrown it away). The pounce thing - I found chalk marks worked fine on small projects, but not on the large projects, which I mostly do. I have since learned to just freeform quilt, so got rid of it.