Welp, after running windows-based smartphones since before there was an iphone or android, I am going to assimilate into the ad-borg. Just picked up a OnePlus and ran the non-nav update, and have Android Auto up and running.
Sync 3 totally broke how I use my phone in my car, with my old head unit I could just hit the voice button and get to Cortana as a voice guided assistant, but Sync 3 does not have a way to do this. So this fixes what was a big step back for me as far as functionality goes.
Going to reserve judgment on Android until I spend a few months living with it, but for now I really appreciate having a much more integrated nav, a voice guided digital assistant back in my life, and being on a mobile platform that actually gets apps developed for it.
Now there is just the small task of moving my entire mobile life to a new platform.