I have both a walking foot and a SID foot. I love my walking foot for sewing on the binding and for quilting in grids, etc. The SID foot is invaluable for stitching in the ditch -- much easier than using the walking foot. Do I use both in the same quilt? Sometimes :D But once I get that darn walking foot on, it stays on until I'm sure I'm DONE! :lol: :lol: