OP's profile says 8100, but for what it's worth, if using a device that supports it, BlackBerry Traffic has several good points. It is free, first of all, and now includes voice directions, and performance is pretty good as far as I'm concerned. Plus, the user can also input a landmark or business or whatever, and not just street address, for search. There are various screens, such as next turn and distance in large font, or a list of all turns with distances. No need to be concerned with reading small fonts on a mobile screen. The app uses Bing Local search, by the way, and does need BlackBerry Maps installed.

Also for what it's worth, I rely on BlackBerry Traffic for nav and Poynt for local searches. I also have the Bing app because the Bing maps app will often show addresses that BlackBerry Traffic or BlackBerry Maps can't find, and also for the satellite view feature.
Posted via BlackBerryForums.com Mobile