I'm thinking about going with one of these for my boat. What I like about it: Tight integration with Navonics (split screen between the two apps) Virtually unlimited screen options. I could even have two screens (an old phone and a tablet). Why pay for a fancy screen when you already have one in a tablet. My old phone is waterproof as well. If anyone is using one of these on their boat, I'd love to hear more about it.