I am also 1 garmin up front, everything else is Humminbird Minnkota. I know nothing about mega. Your statement "Livescope will be plug and play" caught my eye, not sure of your meaning, but I am always adjusting, range, gain, color pallet etc. That is why so many of us have them on elevated mounts, not to see but rather easy to reach to adjust. Hope this helps, it is a game changer, at least you know you are on fish, I think it helps my confidence and focus, instead of chunkin and a windeing