Bigger and more comfortable. Much more rear legroom than an F10 but not as much load space (with the seats up) as a Touring.My wife pointed one out actually...I just thought they were pointless rubbish though. What are they like compared to the standard 5 series?
Longer wheelbase makes for a more comfortable ride but Adaptive Drive is a just IMO. More cumbersome to park and around town but coming from a Range Rover I can't foresee any problems.
Usually can be found with a better spec than the F10. (Comfort seats, rear TVs..)
Unloved and the prices reflect this.
There are a few 535 GTs in your budget as well.