GPS units

Some big selling points, but also some big drawbacks

Solid, refined update with better screen and battery, but few new features to justify upgrading from Bolt V2

Sophisticated little budget computer that's easy to use despite also having fairly extensive capabilities

Simple but extremely effective GPS computer that can be a very useful aid for serious training – and a great price

Very capable budget computer at a great price – if you keep expectations realistic, you'll be very pleasantly surprised

High price for a rather basic computer, but at least the app doesn't require registering an account

Easy to use, effective and stuffed with features, though not all of them are really worth having

Excellent large screen, great customisation and good mapping all help justify the high price

Decent option that does the basics pretty well, for a good price

Robust and user-friendly unit that also offers smooth operation, a superb screen and great interaction with numerous sensors

Delivers excellent mapping and navigation experience with a host of training options that promise to sharpen your riding

Stunningly powerful and peerless training computer rather hamstrung by the frustrating interface and user experience

Good overall package for tracking and insuring your bike, but not without some big niggles

Good in many ways, but awkward viewing and lack of mapping means it's not well suited to bikes

A cycling computer with a lot of data and many promises of performance, but unreliable user experience

Expensive and big, but easy to use, hugely customisable and the best battery life available – an excellent computer

Simple-to-follow navigation computer that is small, sleek and well priced

Very good GPS bike computer at an extremely reasonable price

It's three years old, but there's life in the Garmin Edge 830 yet – it's still a very good option

Very solid performer packed with huge battery life as well as useful features for navigating and training

Hugely versatile training computer with masses of functions, but navigation is basic and the screen, though colour, is small

Neat GPS bike computer now with a colour screen that improves clarity, and updated navigation features

Great hardware hampered by unpredictable signal and an app that needs work

Small, simple to use satellite-tracking computer for non-GPS money

Thoroughly impressive unit and app at a price that might outweigh the slow processing and unrefined map graphics