Either we Brits are particularly clueless at finding our way around, or we're more prone than other nations to heated arguments between driver and passenger. What else could explain the UK's fervent embrace of satellite navigation?

There are oodles of GPS products out there designed to get you from A to B without incident. Unfortunately not all of them are as efficient as their makers would have you believe. Neither the Evesham Nav-Cam 7500 TMC, or MyGuide's SilverGuide 5000 Nav, for example, proved especially adept at sending us in the right direction.

For reviews of 11 more leading GPS products, take a look at the comprehensive round-up starting on page 102 of our September 06 issue.