I think I'll switch between them pretty often. I'll use SYNC3 for Sirius, climate controls, and probably some of the music apps that use applink. But Android auto is nice because it will be easier to switch between playlists in Google Play Music or Spotify. And once Waze is available for Android Auto I'll use that everyday on my commute.Which do you expect to use more?
Personally I expect to use standard bluetooth for music on normal driving, and only plug in for android auto on longer trips when I need nav.
What say you?