Associated and Mugen and Kyosho are high-end race rigs. Do you need/want a race rig just for full-throttle mayhem?
Where do you want to buy spare parts? Local store, or online? You are in Germany? You might want to find an online supplier that is local at least to Europe. Shipping from overseas takes a long time.
Have you looked at the Arrma Kraton, or Talion? Arrma also has the new Nero monster truck with shift-on-the-fly locking diffs. That might be right up your alley.