I love Mettler, YLI, King Tut, Sulky (cotton), and I do like Star. I absolutely hate Aurifil. I must have gotten old thread in both of the shops where I bought it. It has popped in both quilts I used it in. One of those is my avatar quilt. And that was after the first washing. I just won't risk it again. I get so tempted by all the pretty colors, but I will spend my money on something that hasn't burned me. Lots of people love it and have no problems. It just must hate me!