I would buy the Pfaff in a heartbeat. Have used them for years and they are workhorses that go over multiple seams without a pause. First company to have the built-in top feeddogs. This is a gizmo that slips into the back of most of the feet that keeps the top fabric layer feeding at the same speed as the bottom. Makes a huge difference. And best of all, you're not aware it is in place so it doesn't interfere with visibility.
SandyQuilter