I had been using Coats and Clark to practice my free motion quilting. I finally got my batting in, so I got ready to finish my first quilt...I couldn't figure out why my fabric wouldn't feed. After digging through to find my manual, I found out it means there was too much lint with my feed dogs. So, after maybe 2 weeks of occasionally quilting, I already had to clean out the lint!!! No more Coats and Clark for me...I did use Aurefil to piece and quilt. It worked very well, but I don't know if I can sustain the cost for all the colors I have in mind. Ordered some Gutermann and some from Connecting Thread...will see what works best.