You know what changed my quilting, the number of feed dogs. I went from a wonderful cam Kenmore with only 2 feed dogs to a computer Kenmore with 4. I've had my new K for over 10 years now and she's still my favorite. I only wish for a auto needle down position. I do have older mechanical machines with 4 feeds and they work just as perfect as my K. I wish I had known this little tidbit when I was selecting my older K. I do envy my gf her new Janome with the adaptor in the feed dog area to go from single hold throat for straight stitching to a wider multi-stitch throad plate, all by selecting her stitch.