I'm a newbie to the Iphone market, what is the advantage to paying for an app like Navigon or TomTom over the "Maps" app that comes preloaded on the 4S? I, like others before am interested in something that can give me up to date maps and directions and if it can find some POI as I need them it would be a nice benefit. Since I have a limited data plan I would also have to have an app that isn't constantly going through data during my trip. Seems like that leaves me with TomTom or Navigon, any other recomendations? Thank you all.