I bought a Sparrow 20 for retreats to replace my little cs6000i and I have been putting it through a workout. I made 200+ fleece ice pop holders for a hospital, 25+ jar grippers which really tested it. Also sewed on 16 double kitchen towels getting them ready to crochet hangers on them and finished with piecing sections of insul brite for hot pads. It never missed a stitch. I however am done for the day. Taking it on back to back quilt retreats the last two weeks in October. Will let you know how it behaves itself. I am very happy with it so far.