My Pfaff serger is 11 years old. It never misses a stitch. I really love it. I took another serger class a couple of weeks ago. There were 8 of us in the class. My serger and an old, old, old White were the only 2 that could be set according to the instructors directions, and work perfectly every time. Prior to the class I was beginning to think that it was probably time to start thinking about getting a new serger. Since the class I am very grateful I have the Pfaff and realize there is no reason in the world to replace it.