At this price, and with this feature set, the TomTom ONE blows away the competition.

The latest edition ONE features an even smaller design and an EasyPort mount, and supports TomTom’s Map Share feature. The ONE continues to set the standard for other GPS units to strive for.

A sleek, slim design combined with the latest in features including the ability to transmit sound via a built-in FM transmitter, the compact nuvi 760 is definitely a winner.

The AVIC-F500BT is a unique but welcome addition to the navigational market. This is the perfect device if you want to add the latest in navigation and entertainment to your vehicle without altering your existing stereo.

Without a doubt the best GPS unit Mio has ever released, the C520's delightful widescreen display, split-screen technology and text-to-speech navigation makes this one of the best units we've reviewed.

The C320 is very similar to the successful C520, minus a couple of features. It represents great value for money at this price point and is ideal for first time users, or those who just want a GPS unit without extra bells and whistles like Bluetooth and multimedia functions.

The GO 720 is another fine unit from TomTom. It features a slim design, great maps and navigational performance, Bluetooth for handsfree calling and some great safety features.

The ONE 3rd Edition adds an excellent safety feature to an already outstanding unit, though it's a shame battery life hasn't been improved. Regardless, it's definitely great value at this price.

The ONE XL adds a larger display and a new design to an already outstanding GPS unit. At this price, it's the best value for money on the market and combines excellent navigation and an outstanding user experience.

The XL adds a larger display to the already fantastic ONE unit. The new EasyPort mount and TomTom’s Map Share feature make this an enticing unit.

This is by far and away the best GPS unit on the market. It combines an excellent design with a fantastically easy to use menu system and features a whole range of extra offerings such as Bluetooth hands free, MP3 player and excellent text-to-speech technology. A must have.

The ONE has received a facelift and although the improvements are largely focused around the aesthetics, this is still one of the best value for money GPS units on the market.