I think Coats and Clark is a fine thread to use, there are lots of different threads out there made of polyester, cotton wrapped polyester, polyester wrapped cotton, 100% cotton. I have not had coats and clark make lint, some of the walmart, and off brands do have fibers spun into the thread to "beef it out". I use the "floss wrap and tug" (like you floss your teeth, wrap a couple of times around a finger and tug), if it doesn break you can use it. I "eyeball" any thread and if I see bits of lint on the thread, I do not use it. I am not a thread snob, just very frugal and buy thread from yard sales and auctions.