My ride:
Perodua Myvi (MY2018, 1.5H variant).

- Prefers SQ/SPL/SQL:
Not sure, possibly SQ.

- File format/medium used for my source:
256kbps AAC sourced from iTunes Store, audio from Youtube app /
iPhone X, standard Android phone.

- Music genre:
Pop, hip-hop/rap, R&B, alternative (basically top 40 stuff).

- Budget:
RM 1500-1800 for HU, speakers I'm not sure. Total shouldn't exceed RM 2500.

- Setup type preferences:
This one also I'm not sure, maybe just replace the existing stuff in the car without additional hacking if possible.
For HU, I'm thinking either Sony XAV-AX200 or Alpine XAV-AX200.

- Other requirements (if any):
Must keep steering wheel controls.
I also want a set of cameras. I'm thinking 1 reverse, 2 front. Not sure how to proceed with this requirement.