I HAVE THE JANOME6500 AND LOVE IT!!!iVE HAD IT 6 YEARS And at first I had a problem with my bobbin case and my dealer changed the case , but you do have to keep that bobbin area clean. My friend has the 6600 and if I upgrade I will get that one, but for now I love mine, also have the Jem for classes and to take with me when I go on vacation.