I was thinking about getting a Janome 6500 or 6600 for a long while and joined the yahoo group. There seemed to be a lot of people with tension issues FMQ. I couldn't understand for the life of me why one brand of machine would recommend a different bobbin case to FMQ-everyone else's machines do fine without. At that point I decided to get Brother QC1000-great FMQ from day 1, no tension issues.