I use to use CT all the time for FMQ. I made my DH a quilt like "his grandma made him when he was a little boy" a few years ago. Now the quilting threads are breaking/coming out. I need to requilt it, it was just cross hatched. That's the only quilt this happened to that I used CT thread on that I know of. Other quilts were charity, etc. I did a couple for my mom which are fine but she doesn't man-handle them like DH does. You'd think a kid owned his quilt! It is one of his favorite possessions & he uses it every night. But yes, CT is heavy on the lint. I use it for piecing as I have so much. I've never had any problems there. And, I did notice that the last few spools I bought the thread was breaking when I quilted with it. I have Viking Mega-Quilter. I switched too Superior Threads So-Fine and love it!