The 680 is the Janome skyline S5 and it is a great machine with beautiful stitch quality ..easy to use, stable/sturdy and the 9mm stitches are beautiful ..does not effect narrow seam at all if you are a quilter. The free/motion quilting is fluid and balanced ..be sure to follow the set-up in manual as it does require settings that you would not know intuitively beyond dropping the dogs and loosening top tension . The machine comes with almost all the feet you would need. I’m very happy with mine ..it actually replacing a Janome 6600 and so far, after 2 years, has been equally capable but with added perks that I like and as a quilter - the 1/2” less harp space has not been noticeably tighter than the 9” I was used to.