I've been using Navigon since the release of Windows Phone 7.5 Mango. I paid $29.99 because it was the best GPS app available back then. And now that I have a Lumia 920, the latest version of Navigon is still better than Nokia Drive. It gives you 3 different routes to choose from instead of one, live line assistance is a killer feature. Trip planner is very useful for interstate trips. It offers true off-line maps as well and the local search is WAY better, accurate and efficient than the one from Nokia Drive. We all know that Nokia Drive is free, but if you want a full fledge GPS system on your phone get Navigon. Is still cheaper than a stand alone GPS unit.
Sent from my Nokia Lumia 920 using Board Express