I've been watching the Garmin webinars, when the Garmin guys "advertise" them here. I took pictures of my computer screen when one of the "maps" would appear.
We also have a Sling 2 with all glass Garmin. I like it so well that that's what I'm putting in my RV9A, and laying it out the same way. The only difference is, the Sling has the 10" screen, I'm doing 2 7" portraits. Plus, when I bought the project, the guy I bought it from already had the wiring harness built for all Garmin (2 screens).