CampingWorld has lots of options to choose from. I like Magellan 7" mostly because I'm used to their system. Other makes have some better features. $300 to $400 buys you just about anything you need and in a 7" inch screen which is much easier for a driver too see. The wife uses her I phone and I pad. I ignore everything she says (don't tell her) and use my Magellan which I mount right where I can see it even while driving. And I like the way she tells me which lane to get into 2 miles in advance. Wife tells me the same info about the same time I'm making my turn. :)