I have the android 8 version of this model:
https://xtrons.com/bmw-x5-e38-androi...b-rom-ib9053bl
I really like the form factor and the fit in the dash. If you look closely at the models and how they fit, the 10.25 is a very wide screen, whereas the 9 is much taller. Clearly, 10.25 is bigger than 9, but the usability for the 9 is higher, IMO. The 9 does NOT have any DVD or CD functionality, which my 7 still retained, so keep that in mind. I'm not sure about the 10.25.