Hello, I am looking for THE BEST Navigation software for my iPhone. I had downloaded nDrive which was pretty cheap but I dont' like it at all. So I decided to pony up the dough and look at the other apps out there. They are: MobileNavigator by Navigon TomTom Megallan Roadmate 2010 Can you guys shed some light on thoughts of the programs. Pricing seems to be in line between all 3. Ranges from $49 to $79.