Magellan
I also bought a Magellan . I bought the marine version.It is very intuative.Every screen can be configured to your preferance.All the nav -aids were already in.Lighthouses,marinas ship wrecks,bouys.More detailed mapping is also available,easily.We use ours on Lake Michigan and inland lakes,taking it in the truck with streets listed as well.It works at 10 degrees ,has a nightime backlit screen ,doesn't eat batteries,plugs into the boat or cars easily.Bought it new on Ebay for 170 or so.