most of the Android players lack a good sound processor, rest the screens are good,
dont go for a very highend android device scam, because no android is high end, they are all guzara.. good screens with average sound quality....
if you want good sound quality then branded devices are no match, used branded 7 inch screens are not very expensive while new ones can cost upto 80k. No android can match audio produced by a pioneer or jvckenwood.
The screen provided in Ativ X has a very bad display but at the same time audio quality is awesome, i have just added a pioneer active bass tube and the combination produces amazing quality, since i don't believe in watch videos in car, its doing the job for me... i wont advise ativ x users to change screens, however, for ativ and gli, i would suggest go for android players, add a good pair of components in the front, move the front speakers to rear, adding an amp with android will also help your cause...