With an excellent map display, easy-to-use interface and clear audio instructions, the TomTom GO 300 has nearly all the features drivers need in a GPS system.

A large 3.8' screen and fast processor speed can't compensate for the bulky size and lack of both a touch screen and internal battery on the iCN 635. The hefty price tag also counts against this unit.

There's no denying the convenience of having a combined PDA and GPS unit, but we have seen easier to use GPS units.

A solid and portable GPS navigator.

If you spend a lot of time driving around unfamiliar areas by yourself, the iQue M5 could be a substantial time saver. It is well-built and easy-to-use, but a little pricey.

The TomTom GO 500 adds handsfree capabilities to an already impressive set of GP features.

The GARMIN StreetPilot is a reliable and easy-to-use GPS unit.

The compact size of this unit doesn't compensate for its poor GPS performance. Not recommended.

A good GPS receiver, but the irritating audio notifications and lack of advanced customisation features mean this isn't the device to take on long drives.

You only have to look at the absence of Bluetooth and WiFi support to see that the n35 is a navigation device first and a handheld second.