Use whatever fabric you want! It doesn't have to be a "designer" fabric. To me, the feel of the fabric is more important than the name stamped on the selvege. If a "no name" fabric is tightly woven and feels nice to me and I like it, I will buy it. I always pre-wash due to skin allergies and I have had fabrics that are considered "2nd rate" run AS WELL AS the LQS fabrics. It all depends on the dyes they use. Batiks will run so they should always be pre-washed if possible because they are "over dyed". The most important thing to remember is that it is YOUR quilt, you are allowed to do anything you want to with it, including what materials you use to construct it! Don't worry about what is right or wrong, it is all subjective!!!