I wanted the same thing when my DH wanted to give me a Bernina (yeah -- really happened.) Anyway, we went to G Street Fabrics in the DC area, a company that sells LOTS of Berninas, so I was inclined to believe what they told me. They said the lowest priced one that would accept the BSR was the 440QE. It does take an embroidery module, but you buy it (or not) separately.
This being said, we're still talking about a $4,000 or so sewing machine (incl the BSR and walking foot, but without the embroidery option.) Just want you to be ready for the sticker shock. Maybe they have a good sale or a demo you can buy. But you can't go wrong with a Bernina.
Good luck in your shopping!