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

While we have seen other GPS units equipped with basic safety warnings, the Road Sense sofware on the RoadAngel Navigator is by far the most extensive and practical implementation of safety features we have seen on a GPS to date.

The iCN 720 is a solid GPS unit that works well and includes a digital camera, navigation using photos, 4-inch touch screen, remote control and easy to navigate interface.

The gogo CM310 is a very solid navigation device, even though its multimedia features aren't outstanding. But a fast, distinctive interface, an included 1GB SD card and USB card reader and the presence of turning "blinkers" differentiate the CM310 from the crowd.

At this price, the LN500 is an excellent choice, especially for a first time user. Text-to-speech technology, solid Destinator software and a stylish, slim design are enough to put this near the top of your list if you are on a budget

The S30 is an ideal GPS unit for those on a budget. The entry level unit combines a stylish design with good maps, a reasonable feature set and a very competitive price.

The S50 adds Bluetooth handsfree and NavPix for a reasonable price. Although there is no camera to take NavPix photos, it's still a useful application.

The S80 is the third product in Navman's S-Series range and introduces text-to-speech technology to an otherwise largely similar unit to the S50.

The AVN2210p is far from perfect, but it's a nice example of what can be achieved by combining personal navigation and in-car entertainment. It's a very solid unit with a couple of nifty features and the fact that the GPS unit is detachable will be a selling point for many consumers – not to mention its very reasonable asking price.

The zumo 550 is without doubt an excellent option if you need a GPS unit for your motorcycle or scooter.