This massage ball is optimized for deep-tissue work. It comes in 2 versions -- Original with super-flexible bumps, and X-Firm for the deepest possible stimulation.
Beasties Series don't replace the RumbleRoller, but they are more specific in purpose. Use them to dig deeper into a troublesome area, or to work with greater detail on smaller muscles - e.g. those of the forearms and calves.
The Beastie Base elevates and stabilizes the Beastie for more controlled use. It also prevents the the ball from rolling away. This facilitates more controlled massage techniques and helps you access hard-to-reach areas. This guarantees maximum penetration of the muscle.
Original or X-Firm?
The best one for you depends on both your sensitivity to pain and your method of use. If using the Beastie on the floor and putting your full weight on it, we recommend the Original. If you're using the Beastie against a wall, you'll be applying much lower forces to it, and will probably respond best to the X-Firm. If you plan to work your entire body and experiment with different techniques, you may want to own both versions.