Initially I switched to AA wireless for about a year and I found it terrible. Once connected though it stayed connected
It would take anywhere from 10 secs to 2 minutes to connect .... or fail which is not ideal when you just want to drive, not wait for Google Maps to load for traffic
It failed about 30% of the time which involved having to reboot the car, headunit, or both and took ages to load another 30%
The only reason I used wireless was so I could play my music from a USB stick but, after investigation, I now have my music on my phone and use AIMP which mimics the USB
The bonus is that my phone now connects to the headunit every time and very rapidly