I recently added 15 lb club bells about 6 mos ago to my home gym, which includes kettlebells, and a Stronger Grip loadable mace. I'm very happy having them in the mix as it strengthens the upper body in a circular manner whereas kettlebells is more linear. I mix it up using one, two or all of the implements in any given workout. My regimen also includes bodyweight (pull ups, pistols, pushups, indian squats) and sprints. The great thing is, while my neighbors take up half their garages with benches and barbells, my entire gym only takes up about 4 square feet of space in my garage.