Wow. If sat nav heaven is having Angelina Jolie jump into the passenger sea and asking you where you want to go, then the Garmin Nuvi 3790T comes a very, very close second.

Garmin plays second (or even third) fiddle to TomTom when it comes to satnav in the UK and it's hard to see why. The nuvi 770 competes head-to-head against TomTom's flagship 920T and it's just as worthy of pole position

Garmin's new nuvi GPS navigation device bills itself as a 'personal travel assistant'. Unlike other GPS devices, this machine isn't just designed to sit on your dashboard and coo "turn left" and "turn right"