As soon as I watched the youtube video that was posted in another thread I was sold. Seemed like this new product has gotten around most of the quirks the Mark 3 was running into and with a much easier install. My stock unit was already messed up from the previous owner to the point my emergency blinker button would do nothing, so I was due a replacement anyways, so why not upgrade. The install was pretty spot on and simple as described in the video and took me roughly an hour to finish as I was being careful not to overlook anything. So far, I'm pretty impressed. I get all the same functionality with the stock unit but with the addition of an Android tablet which just opens up a world of options. My XM didn't seem to work directly through the unit but with Android I am able to just use the Sirius app, so that's a wash. I'll post an update as I continue to learn and configure the app.
Link to the Youtube video
Link to the Youtube video