In my zeal to take advantage of what I assumed was experience or research of these apps, I went to the App store to check out two that interested me: Navigon Mobile Navigator, and Distance Meter Pro. Most of the reviews on both say that they are terrible, can't do what they say, and not to buy these apps. What are the odds of that happening? It makes me think that you haven't used all of the apps that you're recommending. in my experience, most reviews in the App store are detailed and accurate.