I have not purchased any C&C thread since they went straight polyester. I have used the duly duty for years with no problems. I used it to sew kids clothes, jeans, DH shirts and my clothes and for machine piecing. I have a good supply still and will not purchase the polyester. I sew and applique cotton and want cotton thread. I also e-mailed C&C. I got a reply but no answers to my questions about the thread change.