A few years ago I bought a used Pfaff Grand Quilter that has the thread cutter, which I didn't know I wanted on a machine. It's the one feature I could not live without should I buy another machine. I don't used leaders and enders, it cuts the threads without tying, and begins sewing as soon as I push the pedal. No chewing of fabric, no skipping of stitches... truly amazing and makes piecing so much faster. A great innovation.