When sewing I buy the best I can afford in fabric, thread, machines and tools. For piecing: Presencia 60wt 100% cotton thread ordered from Red Rock Threads online (finer thread = less bulk in seams). For Quilting: Glide Thread with their prewound Magna Glide Delights in Bobbins or Superior Threads “So Fine” and prewound bobbins. If I need to I will wind my own bobbins for FMQ but for LA I prefer prewound.