Using Headunit Reloaded for wireless is dumb. Yes, it works, but AAGateway is actually designed for this specifically and preserves the built-in AA functionality. Same developer.
HUR will reduce your ability to mix audio sources (i.e. radio and directions) and take away the nice AA phone call...
I've had no luck with radar apps. They're all too slow.
My app setup matches most here. Yalp Store is an absolute must. Removes all the guesswork with API compatibility or filtering out apps that require Play Services (some do but don't really enforce it to the point of being unusable).
And...