I have/buy generic feet that work great in any of my mechanical machines and also my newer Sparrow. I don't like them on my newer Pfaff. I don't know why, but they just don't seem to work/fit as well as the Pfaff feet. I can use my Pfaff feet on other machines without issue. Maybe it has something to do with the IDT. Maybe it's mental, but I prefer the Pfaff feet with that machine.