Nanamoms, Aurifil 50wt 2-ply (orange spools) is a fine cotton thread that I love for piecing. It is very smooth and not linty. Great for accurate piecing, and I also love it for quilting on my domestic machine. It seems expensive, but actually a spool lasts a long time because there is more on the spool (and you don't have to change the bobbin as often, because a lot more thread fits on the bobbin). If you try a spool, I think you will be hooked.