Precision, stability, reliability. I have had my Bernina960 for 30 years. I got it when I was working in a fabric/altering shop then. That was what we used in the shop to make alterations. I fell in love with it and bought one. I have never been sorry. It has never had to be worked on yet.(knock on wood). I also have a Janome quilters companion which I love also. But it is not the machine that the Bernina is however it is considerably lighter.