I've found Yenmet works, too. I watched a Bernina 820 using it with OESD Xmas ornaments at top speed for 20 minutes with no breakage. So I bought it.
I have one advantage with the Pfaff 2170. I can use the foot pedal with small difficult spots in embroidery mode. Sewing extremely slow and an upright spool with a mesh cover (if needed) avoids the breakage.