Whatever you buy, be sure to rotate the handwheel through the whole stitch before you sew with it. A little forethought can save a lot of $$$ in repairs.
I usually use the foot for my machines (Janome, Pfaff, Bernina), BUT, I have sewn hundreds of blocks using a generic foot on my 100 year old Singer treadle with no problems. Of course I ran through the whole stitch to make sure it didn't hit anything above or below before I sewed with it.