PC Advisor's guide to the best five GPS devices on the market today.
Satellite navigation has become a bolt-on for mobile phones and is a worthy selling point for some of the pricier models.
For our money, however, a standalone model is where the technology really proves its worth. For one thing, a phone screen is too small for this task.
The maps provided by TeleAtlas and Navteq are worth updating periodically - for many people, the most valuable aspect is traffic management, which can alert you to congestion ahead and offer to reroute your journey.
Lane assistance and safety-camera alerts are also worth looking out for.
While satellite navigation is no substitute for a good old-fashioned map, it can help you pick your way through an unknown city and identify the fastest or most fuel-efficient route from A to B.
Your trusty satnav can also take the mental strain while you enjoy the drive. For Best Buy products in six great categories, visit PC Advisor's Christmas 2008 Buyers' Guide.
Top 5 GPS/satnav device reviews:
- Medion GoPal 4425 review
- Navigon 7210 personal satnav device
- Navman S30 3D review
- NDrive G800 review
- TomTom XL review