I recently got a boat that came with a mark 5x pro. Since this device uses the same transducer, I didn't have to run anything extra. Simpley replaces the mark 5x pro. Maps are decent for free. It's hard to get lost (which is what I was worried about) with this unit. Creating waypoints is easy. Only bad I can find is when you choose to go to a waypoint, it directs you "as the crow flies" and doesn't account for land. That being said, I'd still get this device.