This is one of the reasons I'm switching to Sony. Was one of the features that was sold to me at a training last week.since the marantz 5009 is my go to AVR Sony will be an easy switch over in terms of price.

The music connect feature is really cool, the only "gotcha" is making sure you set up a DHCP reservation for the router but other then that it is just looking for packets.

For the small condos we do where C4 (amazing integration BTW) isn't an option it doesn't make sense this is an awesome option so clients don't have to flip back and forth. Also a cool feature is that you can set the input volume to be locked on that input so clients can use the sonos app to co tell the volume.

There are some really nice installer features in Sony that aren't seen in other manufacturers