At less than half the price of the biggest hitters, this is a smash for hobbyist runners looking for novice-friendly guidance. If you don’t need your running watch to analyse your vertical oscillation or last a full weekend of hike tracking, then the Polar M430 is hard to beat. It has almost everything one is after, including GPS and wrist based heart tracking. Eight hours of GPS use will do the job for long distance jogs too although the M430’s key appeal is how good it is for beginners. A digital personal trainer will guide you through the run up to a 5K, a marathon or anything in between. It’s effective, and arguably less annoying than a real personal trainer.