I bought this 9960 Singer Quantum to replace my Viking Designer One. I absolutely love this machine. It's so easy to use and the quality of the stitches is lovely. The manual is clear and concise and the illustrations are so beautiful. I suggest that new sewers view the videos on line and follow all directions carefully. Take your time and be patient. I am so glad I bought this Singer Quantum 9960. Thank you for a lovely product. I am in need of an invisible zipper foot Where can I purchase one as I have a wedding I am attending in June and I'm sewing a pretty dress to wear?