Recently jumped over to Lowrance and wanted to find out the best maps to use. I’m familiar with Navionics but I’m hearing C Map is the way to go. I know they are preloaded into the units but was wondering if there was any upgradable maps to add to the preload. I see that there are a couple states that have precision maps but don’t see Florida on there. Want to use the best maps I can. What is the best C Map chip/card to use?