Is there really a good Android HU? All the ones I've seen have been more or less crap when comparing against "real" HU's. That's why I chose Pioneer for my Prius.
I'm currently attempting to install a Joying HU in my 2010. I went with Joying because they seem to provide the most support and because they have the biggest online community. Google XDA developers for MTCB and Hui Fei.
I've been eyeballing this Pumpkin for my prius... amazon.com /Pumpkin-Touchscreen-Navigation-Bluetooth-2009-2013/dp/B00OLFHJHC
I had a Joying head unit and one thing I would recommend is a screen protector. The plastic they use for the screen will scratch like crazy. iPhone ?
I bought a GreenYi unit that is pretty awesome for my 2010 prius. I am happy with the upgrade since before i had a jbl non navi which made it look dated. Now with the HU it's completely modernized.