Sat-nav devices are beginning to travel at speed down the convergence motorway, combining technologies to stand out from the crowd. iRiver NV Life is the latest example, combining TV and MP3 talents with on-the-move guidance.

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Grabbing a good satnav is just the start of hi-tech navigation. Decent satnav devices such as TomTom’s Go 720 do much more than just show you the way to go home.

With additional maps, safety camera alerts and remote controls on offer, there’s plenty to get your teeth into. Here’s our tips on getting more from your 720.

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Finding your way has never been easier, or cheaper. But today’s satnav devices come with myriad extras. Are they worth it? Depends what you want to do. Pick the ones that you really need and you’ll find yourself with a genuinely useful addition to your gadget collection.

Watch out though, there are plenty of duffers about too. Here’s our pick from the PriceRunner Top 50. Enjoy.

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