Just to warn you, typically the feet for a Bernina can only be used on that model and that model alone and you might not be able to use them on another machine.
My friend in Arizona loves Berninas, she gave me the 820 I now use because she didn't like that model (she now has a 770). She also has embroidery machines (2) that are not Bernina because they had the designs she wanted. Something to keep in mind with my 820 is that the bobbin is proprietary and I can't get prewound bobbins, I think that is something to consider/ask about with an embroidery machine.
We had another thread with someone looking to get into an embroidery machine, I said there that most people I know with embroidery machines find out after they get the one they have what are the features they want.
I know that I wouldn't use one enough to be worth the price, but if I did I'd want to be able to scan in a motif so that would be deciding point for me.