Ohmigosh - those three models look so much alike! But, it's definitely not a 15, because the tensioner is on the front, which I missed the first time I looked at it.
If it's a 201 and I wanted the machine primarily for quilting, I would skip it because of the much smaller and horizontal class 66 bobbin.
For quilting, the best domestic machines for quilting will take a large class 15 bobbin, oriented vertically. Even then, the bobbin is going to run out in 10-15 minutes of free-motion quilting.
If it's a 185, I would skip it because it's only 3/4 size - cute to add to your collection, but the OP seemed to want a working machine for quilting.
Last edited by thepolyparrot; 11-14-2012 at 09:42 AM.