I just want to add that you can also do straight line quilting (like stitch in the ditch) with a regular foot, it's just easier with a walking foot. A walking foot helps move the fabric from the top, which helps keep the sandwich together better. I mention this only because for some people the additional expense of a walking foot may be out of reach (mine was well over $100!), and I'd hate for someone to think they couldn't do it without it.