Aftermarket Headunits?

Any advice on Android Headunits? I fitted a cheap (~AU$100) AliExpress special to my nieces Tiguan on the weekend (fulfilling a promise I made to her when she first got her car). It has CarPlay and FM Radio and she is ecstatic. Even with the crapware, it is faster and more reliable than the factory Suzuki Bosch unit.

Now I have decided that the OEM Bosch+iPhone+iPad solution I use for XRS Connect, GaiaGPS, NewTracs and CarPlay is too messy/clunky.

Does anyone have experience with splitscreen or multitasking on the 9", 12.3" and the vertical 9.7" Android head units?

Also, what do the larger headunits look like from other angles. I am leaning towards the 9" units because the larger ones overhanging the edges of the console looks a bit naff.