I have about every brand of thread. All the good brands are alike as far as quality. I like Connecting Threads Essential threads, Robison-Anton, Aurifil, Superior, YLI, Sulky, Fil-Tec, Guttermann, InvisiFil, Star, Supreme, and Coats and Clark variegated. I use cotton, poly, rayon, and nylon. For hand quilting I like YLI hand quilting thread, for applique I like YLI silk.