I am a current F10 driver with a lease up early next year. My dealer, with whom I have a good relationship, gave me a 750x to drive for a couple of days. Apart from the fact that the car is not configured the way I would do it (it has no driver assist for example; and has the spare tire, which IMHO really intrudes on trunk space), my initial reaction yesterday was that "this is too big". Today I felt more acclimated so it doesn't feel quite as big. I have had bigger cars in the past (7 series and S class) so big is not totally foreign to me, but I would appreciate it if any others who have moved from F10 or similar would give me their reactions to their adjustment to the size.