As a kettlebell gym owner and certified instructor, I know a thing or two about kettlebells. After testing five top-rated kettlebells for seven weeks (accumulating more than 2,500 repetitions with each bell), I’ve determined that the best kettlebell for all types of kettlebell workouts is the Metrixx Elite Precision E-Coat Cast Iron Bell from Kettlebells USA because it’s the most comfortable kettlebell I’ve ever used. (I recommend the 16-kilogram model for most men and the 10-kilogram bell for most women.) Its wider handle makes it easier to grip with two hands (for the classic swing move), and its smoother finish is less likely to injure your skin over time. These factors made this bell immediately more comfortable than cheaper models, and more comfortable over time than its more expensive competition.