So with lowrance maps are built in and are decent. Humminbird I would have to purchase the map card? I'm wanting to run di up front and side from the console. The idea is Id like to make a waypoint based on what I see on the console unit then be able to go back to it from up front. Is the hb or lowrance (softer on pocket) to be able to do this. From everything I've seen the returns on both brands are comparable.