In general, then, if your priority is fitness, we'd go for one of the first two models on our list, while the Samsung Galaxy Watch 3 is a better bet for couch potatoes looking for other advanced smartwatch features.

On the downside, battery life of just two to three days isn't so great. And although the first two watches on our list offer more sophisticated tracking, the Samsung Galaxy Watch 3 nevertheless provides a good range of health and fitness features. The Samsung Galaxy Watch 3 also boasts accelerometer, gyroscope, barometer and an ambient light sensor. Headline features include IP68 water resistance, fall detection, wireless charging, an ECG, and blood pressure monitor. So if you want one that will work with your iPhone, your best option will be the slightly older Samsung Galaxy Watch 3. However, the brand's latest model, the Samsung Galaxy 4, is not compatible with iOS. If you're not interested in fitness and just want a generic smartwatch, Samsung Galaxy Watches have a lot of appeal.

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