I've always wondered how good the sound quality is on these things. Whether you could go straight to an amp or you'd have to use a sound processor, to achieve the SQ of say a decent Alpine.
I'm put off with reports that the OEM units like an RNS510 have a bad EQ curve and some weird bass limiting thing going on.
The Android units interest me because you can put the Torque Pro app on them and get live sensor data on the display - like Polar FIS but on the HU display. And of course you've got all the map/nav apps and all sorts of other stuff.
I'll be looking into it soon!