Navman’s F20 replacement gets a sleek silver and shiny black case with a slim profile which takes less room on the dash or in your pocket. The improved menu system is impressively logical to follow. The POI were plentiful and gave instant options to route and/or save, though the hotels and restaurants were heavily geared to the major chains. Navigation was clear, though we could have done with an extra instruction near the junctions and the mass of screen info made it very busy during routing.

TomTom’s entry-level Sat-nav is now in its third incarnation and like its predecessors, retains the friendly and easy-to-use interface. The SiRF Star III receiver works particularly well on the One, with the POI being reasonable if not the best. Like many current models, you can use Map Share to update your device when you come to a road change and download changes elsewhere from other TomTom users. And the myriad options – such as funny voice downloads – make it a very attractive option.

The StreetPilot range is still available, despite the burgeoning nüvi range, which has yet to dip below the £150 mark. The C510 is well-featured with full postcode search, colour touch-screen and a car charger, but not one for the mains. It’s extremely easy to use and its POI are well-chosen and simple to access. Perhaps its biggest drawback is the physical size, particularly the depth, which is around 70mm rather than 22mm. As such, carrying it around is more cumbersome, but the price is certainly right.

Looking like a shrunk-in-the-wash version of its X-980T, having a small screen with no exterior controls makes it compact (just 136g) to carry and install, though it still feels well-built. The split-screen feature is good, showing close-ups of the next turn, and the pedestrian and cycle modes make it versatile for city users. The X-960T has exclusive content from Michelin Green and Hotel/Restaurant Guides, though many are a bit upmarket, limiting POI effectiveness. At two hours, battery life could be better.