I started out using zippers, then switched to Red Snappers. I liked them, but as a couple of people have said, they sometimes got in the way, particularly if the backing was a little shorter than we'd like. After using them for a year or so, I went back to zippers. I don't mind the pinning time - but don't like getting stuck once in a while! All in all, as much as I liked the Snappers, I prefer zippers, so I sold mine.