I have had my 770 for about 18 months and I love it! It stitches beautifully, no problems with tension. I have added the embroidery module about a month ago and I am having so much fun with it! I read on the machine embroidery sites people saying their various makes of machine doesn't like this or that make of thread or different makes of needles but my Bernina sews with any make of thread and needle.