Get a FYT based unit. The advantage is the ability to customize it with multiple launchers and even OS options. Check out the following thread on XDA
In Pakistan, Onkyo branded units are FYT. In the Buy n Sell a high end FYT unit is being sold.
A decent 4GB Onkyo unit (e.g. XD-1300) is about 40,0000.
Non FYT units that are decent included Nakamichi 5510 4GB variant. This is not FYT based so you would loose out on the ability to customize the UI. The price is about the same.
All these units have decent audio output, if you add a dedicated amp they are able to provide near to 4V Peak to Peak on pre-outs. You can also take powered outputs if you want, but that will add some noise to the signal. The issue is the sub pre-out voltage which is kind of dissapointing. But these units (at-least the Onkyo and Dudu and I guess the Nakamichi) have ability to control sub out power to an extent through bass boost function. Not elegant but doable.
For the very best in audio exp get a Pioneer 9 series. But those cost about ~3 times as much as a Dudu and 8 times as much as a Onkyo, have limited functionality except for audio and are not the most responsive units.
For the ultimate in android experience get a Dudu 7. Relatively expensive but worth it.
Link
https://xdaforums.com/c/head-units.3833/
If in RWP/ISD talk to @devils_smile if you are in for a good audio experience. If you are just looking for a better functionality display Onkyo, Nakamichi, Dudu will do a much better job.
PS: Nakamichi, Sansui, Onkyo etc. are all owned by Chinese companies and are no way associated with their Japanese origins. Sad but true.