I buy wide backs when I don't have a fabric, yardage, from my stash. Buying 3 yards of 108" at $17 equals $51 as compared to 9 yards at $11.99, equalling 107.91. Enough said for me!

I have used 45 inch fabric with seams; have inserted extra squares from the front; and, I have used flannel but it is so heavy to work with and cover up with. The one I am working on now is backed with a wide seamless backing. On this one I am using a lighter color of thread in the bobbin so that the quilting really shows up. On the front I am used several colors of thread to match the squares because I want the fabric pattern to be more prominent than the quilting. I have never used sheets as others have. Isn't it nice to have so many choices.

I usually use regular fabric not quilt backings. Some of the quilt backings don't seem to be as good quality as regular 45" width fabric. I buy it on sale. JoAnn's usually always has a sale table.