I just bought a Bernina 770QE and am totally in love with it, although it's so intuitive it scares me!
I need to take lessons on all the features. I have had Berninas for a long time and they are my favorite. But I also have a Juki and old Singers that I also love.
My Bernina 150 has stitches that I never use. I'm not big on decorative stitches and it seems the higher end machines all have lots of them. But that may change for me as I'm going to be a grandmother soon.
My machines are varied in features and I love all of them!
One thing I've never used is the knee lift on both my Berninas and some people can't live without it. We're all as different as all the machines on the market!
Oh I just thought of something. My new Bernina has an auto-threader that works great. I love it. My Juki has one too but it never ever works.