The Magellan Maestro 3225 is a good GPS navigation unit and works well however, the 6 million points of interest is an upgrade and there are no instructions included as to how to upgrade. The device actually comes with 1.3 million poi. The screen is very readable but is low resolution and the batteries don't last very long.

The Navigon 2100 GPS Navigator is a good working unit. The 3d map view is great when you're in a suburb area. The Navigon 2100 also has all of the usual features, one-click to "Go Home" and saving of multiple locoations for easy access. It also suggests restaurants, gas stations and points of interests for the area you are in. The Navigon does, however, sometimes give quirky routes and seems to have a rather short battery life. For the price though, this is our pick if you are looking for your first aftermarket GPS navigation system for your car.

The Mio DigiWalker C320 GPS Receiver has great imaging but the menus can be a little difficult at first. It also seems to sometimes add twists and turns on routes that should be more straightforward.

The Garmin nuvi 200W Personal Travel Assistant is easy to use and can be mastered rather quickly. The only problem with this GPS navigation system is that the manuel is not that well written and certain things like changing from 2D to 3D are not covered.

All four units work well enough to get you to where you want to go, but the Garmin seems to be the best of the four. The routes are more straightforward and it's easier to learn than the others. However, we chose the Navigon as the Editor's Pick because of the price. For a little more than half of what you'd pay for the Garmin, you get all of the vital features in the Navigon. Amazon.com and Radioshack both have great deals on this GPS unit. Also - it fits nicely in your pocket so we advice using the mount so you can remove it instead of fitting it into your dash and walk around in a new city with confidence.