They are great!!! I would recommend washing your fabs in cold water though. The owner of a quilt shop said..."why do you want to prewash fabrics in hot water, when you aren't going to wash in hot water after the quilt is made?" I certainly agree with that.
Last year I purchased the Gallery in Red quilt and washed all the fabrics together with a color catcher...voila, no running of colors. Yes, all the fabrics were reads and whites lol. I figured that would surely put them to the test lol.