I have the walking foot for my Bernina 830....However, I have never used it except for a short class I took once. I too think my favorite foot is the 97D. Why not watch the class and see how the walking foot works...then decide if you need this expensive attachment. I do have the foot, but I have never used it.... because I do not quilt my own quilts. However, I do piece quilts...using the 97D. I use my machine more for embroidery and regular sewing.