If I am doing a large quilt, I prefer to use the wide backing....so much easier and no seams!.....I've also done flannel (must prewash and dry)....and I've done pieced with just one fabric and that is ok, but don't care to mess with the ones that are pieced with several different fabrics.....keeping the seams straight and where you want them is a real bother, at least for me.....am sure there is a technique to make it easier, just haven't figured it out yet!