Was everything mostly plug in play?I love mine. Very easy to install and easily integrates with your car. If you have the Harmon Kardon system you will have to get the most adapter, but they are giving that away for free now. It used to be 100.00 extra. They also make adapters so you can use your factory back up camera, Bluetooth microphone, and GPS antenna. Everything works great. My Bluetooth microphone must has come unplugged as it stopped working after I installed my back up camera. I will have to check the harness when I pop out the head unit again. Tommy keeps pretty odd hours so he is there pretty much all the time to help you out via email or phone. I hope this helps you make up your mind.
Also how was the installation of the backup camera?
I'm looking into the avin, as the old one thats in the ML is shit.