The G1000 does it all. It has the built in GPS, XPDR and audio panel system. The Avidyne requires an external GPS, XPDR, etc, etc. I'm not going to say anything negative about the Avidyne because it's a great addition to an existing setup and I like seeing the approach plates on there!
The Garmin does have a lot of sub menus vs the Avidyne, but it's not intimidating. After a handful of flights it will be known like the back of your hand.
The G1000 hands down.
