It's only a relatively small step forward from its predecessor, but the Hero 7 Black's excellent video quality, stabilisation, usability and range of mounts make it the best all-round action cam you can buy.
Superb image stabilisation; Improved audio quality; Impressive video and decent stills; Waterproof without needing a case; Huge range of mounts and accessories; Now offers livestreaming;
Can get very hot when recording 4K; Occasionally sluggish or unresponsive UI; Still relatively expensive;