I have one of Dig Options' Android HUs, and so far it's been pretty freaking awesome, bar a few niggling annoyances.
1: Top clips come loose sometimes. Nothing a little velcro can't fix.
2: Random app startups. Have to figure out why that happens... Maybe a scheduling issue with the OS.
3: Android Auto support is done through a slightly laggy third party app, so it's best to buy a 4G wireless dongle and keep it in the car for WiFi.
4: Can't seem to change the interior light colour in them? Not too much of a concern for me, but It's slightly niggling to see a slab of green LEDs in a sea of red.
Apart from that? It's been well solid. Good audio from the RCAs, great features, and a pretty good price. Climate controls are also built in and look pretty much stock.