The metal ring of the Hammer Fitness Cross Jump (120 cm) is supplied in one piece and not in several parts. This means that you have to transport the entire frame and the jumping mat as one unit, which should be taken into account when planning transport in your car.
Bellicon offers different rubber hardnesses. So depending on your body weight is an issue. Otherwise Hammer is absolutely equal and much cheaper. I think Bellicon exaggerates the price enormously.