When I first started quilting, I used Coats and Clark because it's so readily available and recognizable name. After reading so much on here about thread quality, I've purchased Guttermans when on sale at Joanns and I do like it better. I also purchased King Tut once and love, love, love it! I'm anxious to try more brands and see how they compare. All it takes is time and money...lol.