I would suggest the 6600. I am a member of a yahoo group for the 6500 & 6600. The built in walking foot for the 6600 is such a benefit for quilters. I adore my 6600. I do not find the screw to be unbearable as two really small screwdrivers came with my machine. I think Janome needs to improve the screw but I can live with it. The other things about the machine far out weigh that tiny little inconvenience. The Yahoo group is wonderful, I suggest you would want to join if you purchase either machine.