When I took my BL crescendo I last week, the dealer said he would trade it plus 2000k for a Bernina 770 which he was selling for 5600$ With interest free financing next week. My husband said to do it if I really wanted it. It does have a bsr and large bobbin. I slept on the idea for 2 nights and decided not to do the deal even though the 770 is a really nice machine. It must have been a great deal for me because the dealer didn't push too hard which he usually does. The biggest sticking point was the cost of Bernina pressor feet. The 770 doesn't come with very many, not like the BL.