Absolutely love the knee lift (lifts the presser foot) especially for paper piecing and other piecing too! I bought a second hand Bernina so I could have that feature. When I use one of my old Singers that does not have one, I am constantly trying to find it with my knee. Funny! I also have one that is a separate gizmo that can be bought and attached to your machine with a sort of wire and has a foot pedal that you push to lift the presser foot lever. Strange but I used it for years on one old Singer.