You can rationalize it any way you want but what exactly would you do with
CarPlay that you couldn’t do without it? I can tell you that the HUD is a beauty to behold.
I can tell you what I can do with
Android Auto that you can't do otherwise. I don't think
Car Play is as effective because Siri is not that effective. But even so.
With AA, I get up to date Google Maps which are constantly updated as opposed to paying $200 for the native map
I can get Waze which gives me real and instant traffic updates as opposed to XMTraffic which is spotty at best and for which you have to pay additional money (I believe).
Apart from the timeliness, both are simply miles better than the native maps. You can send POIs to the car using Google Search, but it's awkward and clumsy. Does that also require a subscription to Blue Link?
I don't yet have Gas Buddy, on AA, but I have actually been using gas stations on Waze lately instead of Gas Buddy since it shows them along my route. Gas Buddy used to do that as well earlier but then messed it up in their later UI.
I get streaming from Google Play Music and ability to say aloud which song I want to play or songs composed by someone etc. I can get that through bluetooth as well, but Okay Google never worked very well for me in a moving car (noise) on the phone. Maybe it's not as bad in the Genesis which is a much quieter car. But since I have AA, I have never tested it.
If I have done a search for a place at home, when I get in the car, it shows up right away as a potential destination. If I have an appointment with a business, it pops up as a destination to be selected. Google Assistant is smart and it only gets smarter as it gets to know you better.
I can navigate to a friend's house or call my wife using AA using natural language as opposed to the very stilted native voice recognition. I only tried the native voice control once before I installed AA, and maybe it's not too bad. But I'm sure it can't compete with Google Assistant.
I don't use this feature since I use Google Voice, but it can read out text messages and you can reply using, again, natural speech.
When I drove the V5, I loved HUD. And I was definitely going to get the Ultimate Package. But not at the expense of AA. Again, once you have used AA, it's tough to go back to a system without it.