Swapped my VZ Berlina + change about 12 months ago for a great condition E46 BMW. It's only the 318i poverty pack, but it's a manual and has been looked after all it's life!
I started teaching myself how to do basic maintenance on the Holden, and the advantage of the BMW is there's a much wider market, so a much wider availability of know-how and youtube vids to follow. So far I've done a gearbox oil change, diagnosed and organised repairs done on the cooling system, and soon I'll be replacing the front swaybar links and doing a motor oil change. Good "clean" fun.
Currently I'm waiting for an aftermarket stereo that fits the slightly-larger-than-double-DIN space and has CarPlay, but for now it has an Aux cable hooked up to an old iPod AV cable, in turn hooked up to a 30-pin -> Lightning adapter. I ran it through the centre console and made a hole for it to pop through near the armrest. It's not perfect, but it charges and plays great quality audio so I'm happy!