I had Google Navigation on my Droid X and it was VERY good. Being able to enter a voice command for a destination was nice and it was a very accurate voice recognition program, usually bringing up the destination on the first try. And it gave me turn by turn instructions via voice. Of course, using it in the car really ate up the battery but it was excellent. And it was free on Android. I have read reports that people like Navigon, an app that costs around $50 with maps that are not totally up to date with the Places of Interest. There are reports that Apple is developing a Navigation app.( probably not free). I did try the MapQuest program from the app store yesterday and it is not bad at all. It is a free app and gives voice instructions for turn by turn. If we could get Google Navigation on the IP4, with voice input it would be nice, but for now, the Mapquest is not bad.