I had a pioneer, sold it for a good bit of profit and got a Dudu 7. One thing I learned with Android Units based off FYT/ Spedtrum/ Unisoc designs is to ditch their music player and use either power amp or aimp. Those paired with high quality FLACs from something like Tidal makes these players sound much, much better, at-least to my ears I could barely tell the difference between the Pioneer I had (9350), though it wasnt one of the newer (NEX in the USA) units. The Androids are much faster, offer better functionality that is more useful for my use case (split screen, TPMS integration, ambient light integration, DVR, 360 cameras etc etc) and since I got the dudu from the profit off the pioneer, the Dudu was practically free.
TL;DR. So right now I the dudu is running JBLs. What would you suggest?