A stitch in the ditch foot can be so helpful when trying to get your stitches in the right place. There are two types for most machines... One that is on a walking foot , the other is not on the walking foot. One thing I like about the stitchin the ditch foot .. I tend not to sit as close and bend so much to see the stitching path, although I do have to remind my self to sit back. I am much less fatigued and sore after using it. I thought it was well worth the $$.