Quilting ALWAYS shows up more on a fabric that is solid or reads solid. If you want a place for fancy quilting then you need to go with A. The beige is tonal and reads solid and will be a wonderful backdrop to showcase fancy quilting. That said, a solid or a fabric that reads solid, such as choice A, will also show any wobble or mistake so you need to be confident in your fancy quilting skills or have a good LAQ.