Almost all my piecing is done with Connecting Threads, using Superior Bottom Line threads for the bobbin. About a week ago I got LOTS of threads from ThreadArt.com because of a posting here on the board, there was a sale and I got lots of poly, cotton and rayon threads, alot of them will be used to decorative stitcing / thread painting on fabric postcards. Tho I do have Gutermann, Sulky and others.