I would go for
https://www.android-car-dvd.com/coll...32066140438664 (in fact I plan to, as soon as the warranty on my Z4 expires, if I have the patience). The hardware is the same on all these devices, only the software has small differences (in many cases you can flash the software from another vendor on the unit, if you like it better), only the price makes a difference, and quite a big one in favor of the Andream unit.