I have a belt driven 201 and it stitches through just about anything that fits under the presser foot. It has the original 1950 motor / light setup, just rewired and regreased. I don't know about the potted motor, but this is my favorite machine. It is a bit more cumbersome to get out the bobbin case and clean under there compared to model 15 and 66, but when you have done it a couple of times you develop a nack for it. A model 15 with a potted motor sounds very nice too.
Last edited by Mickey2; 03-14-2017 at 08:13 AM.