I'm a fabric snob as well. In the late 1990's made a hand embroidered blocks quilt & used JoAnn fabric for the sashing & borders. The sashing/border fabric has since faded unevenly even though I have sheer drapes on the window in that bedroom. However, I made a larger appliqued quilt -using fabric shop quality fabric- that has been on the back of a sofa on my sun porch for years. I refold it occassionally & there has been no fading.