I have struggled when free motion darning on my 201, but it might be setting issues or beginner issues. I have bought a new jumping foot for it but haven't had a chance to try it yet. I have a Bernina 730 with much the same bobbin type as model 15, it free motions with out any fuzz, but it's a free arm model and those flat beds in cabinets are great for handeling larger plains of fabric. I'm not very ambitious on the quilting side, my plan is a robe like Bilbo Baggins have in the Hobbit, and a couple of nice cosy patchwork blanket size quilts.