I'm writing this from the sewing room right now, using the Accufeed quarter inch foot. I can kind of see how people would like it. I'm having no problem going over thicknesses of fabric. However, if I lift my presser foot and insert my next piece, the quarter inch guide doesn't remain steady; it can shift over to the right, so unless I'm really careful I can have inconsistent seams. This doesn't happen with the regular Accufeed foot. It's rigid. So, I think this must be defective & I'll return it tomorrow.