Which My Sync do you have? QNX based on MS based?
My wife's for Sync is QNX back end and has AA. I like using it in her car. We both have Samsung phones and it works nicely when we switch phones. My Explorer is older and the Sync is the older Microsoft system that does not have AA. Works nice, but I enjoy the additional audio controls I get on my wife's system. I really like the way Audible works on AA.
The two big issues I have with AA is Google Maps and not having all of the features that you have on your phone google maps app. Also, everyone and again the audio gets out of sync/confused and the volume is out of wack.