When you purchase a used lathe there is always more of a risk on getting a machine with problems. A high end lathe like a new Derbyshire, Levin or Bergeon will reduce the risk but they are expensive. I own a lot of lathes and from personal experience have seen fewer problems with used Wolf Jahn Geneva lathes than any of the others. I also bought a used Bergeon but those come up for sale once in a blue moon. If I were just jumping into this now and wanted to work only on watches, I would buy a new Sincere. I bought a new one and it was perfect out of the box. The machine is affordable, has great features and has all of the accessories you will ever need.