My Bluetooth Experiences:
So I finally got the S7 Edge, and it's connected to a 2015 Chrysler with the Uconnect system and my Gear S2 Classic. I use Google Play Music for music, and it worked as expected. Shows the name of the artist, song, album, but no artwork. However I have had a Note 4, iPhone 6, Nexus 6, and V10 and none of them have showed artwork, must be a Chrysler thing. It actually works way better than the Note 4 and V10 did, on par with the Nexus 6, but with a better Bluetooth strength. Songs play and pause without error. My V10 would work, but it would constantly get messed up, or show the wrong information.
I did also try it with the Sirius XM app. Here I did see a slight bit of weirdness. At first, it played the audio through the car, but did not show "Howard Stern" on the Uconnect system, it just showed the name of my phone. I looked at my watch, and it showed Howard Stern and the artwork, but had a Play symbol like it was paused, although the audio was going. So I hit the Play button on my S2, and it turned to a pause symbol. Then I hit it again, and it played the music and corrected the information on the screen of the Uconnect system. No issues after that. Even when I turned the car off, got coffee, came back in, started it up and it went right back to playing Howard Stern and having all the expected information.
Also very impressed with Battery Life