Accurate, full of features and supporting a ton of accessories, the Garmin Edge 520 is a great GPS bike computer for competitive riders.
For anyone new to cycling and looking for a GPS device, the Polar M450 is hard to beat.
This combination of GPS and video camera comes from PC maker Acer.
Long-distance elite athletes will appreciate the accuracy of the GPS and heart-rate, but the high price tag makes it less appealing for everyday runners.
The flagship AVIC-8100NEX isn't just the top of Pioneer's line, it's one of the best, most fully featured receivers on the market. Just make sure you're not buying more functionality than you really need.
Pioneer's flagship AVIC F60DAB boasts dozens of media and navigation options -- including the first aftermarket appearance of Apple CarPlay -- but most users will find a better feature-to-cost balance elsewhere in the brand's lineup.
The Magellan SmartGPS bridges a gap between connected navigation apps and car-friendly GPS hardware with its ability to sync with the cloud and connect to the Web via Wi-Fi and Bluetooth, but its busy interface could use fewer moving parts.
The TomTom Start 60 Europe's large screen is a boon. It makes navigating easy and greatly aids the process of working through the menus. The magnified junctions are a big help when approaching complex layouts and the maps are properly comprehensive. It's a winner all round.
Pioneer's AppRadio has great potential as a cost-effective way to add touch-screen iPhone app control to a car's dashboard, but interface and multitasking issues will prove frustrating for early adopters.
The Navigon 40 Easy is a feature-rich, but relatively affordable sat-nav that's let down only by its frustrating user interface.
The Navigon 20 Plus has an abundance of slightly superflous features, and its postcode input is massively annoying, but it gets you where you need to go and doesn't cost much.
The Garmin GTU 10 is a good tool for tracking and finding lost things, but its positioning accuracy is dependent on the geography around it and the frequency of its reporting.
Rather than reinvent the wheel, Sony's newest all-in-one car audio receiver pairs a brilliant 7-inch display with GPS navigation powered by TomTom. The result is almost the best of both worlds, but we'd like to see a bit more integration.
The TomTom Go Live 1000 is probably the best sat-nav on the market. It's fast, accurate and will do a better job than most other sat-navs of keeping your maps up-to-date.
The Vexia Econav 480 is a decent, if basic, sat-nav with an eco mode that makes gear recommendations. Our advice is, if you have to take your eyes off the road to get reassurance from your sat-nav about what gear you should be in, please get off the road. Immediately.
Anyone who wants a reliable and simple navigation device with a bit more screen real estate won't be disappointed by the Garmin Nuvi 1490T.
The Magellan RoadMate 1700 isn't a GPS device for everyone, but with its huge screen and road-trip-friendly features, we think truckers and RV drivers will love it.
The TomTom XXL 540 S improves on the TomTom XL line by keeping the features we love while improving screen visibility; but the bigger size comes with compromised portability.