I've always been a bit confused with Bernina and providing this cheaper machine.  Having nothing to  do on Sunday except play I was looking through the latest model Bernettes, the top end one now being the B77, to discover it had the identical walking  foot to the Pfaff IDT.  Dual feed, they call it

If they can add it on this machine why on earth don't they put on the higher end models?

https://www.franknutt.co.uk/bernette-b77

Well, I always prefer Bernette 70 Deco over this sewing machine. I checked the features of both of these sewing machines and found Bernette 70 Deco more reliable. I also found B77 mentioned by many experts as the best sewing machine in 2021 but I can not understand the reason behind this logic. I still love 70 Deco over all Bernina and Bernette sewing machines.