Gets Me There
I use this Navigation application with a Wi-Fi only iPad 2 using an external Bluetooth GPS (Dual 150).
The built-in maps are essential without a cellular connection. Have used for primary navigation across the US. And found it quite reliable.
Multiple destinations may be input. POIs are useful, as well.
Address input is a bit clunky, best to do it prior to driving.
Motion X is still the superior app, yet you must download all maps prior to a trip. Thats not always practical.
Ive tried quite a few nav apps and Navigon is the best I have found, with included maps. Well worth the price.
Pixel-bender about
NAVIGON U.S. West, v2.3