I own a mammoth and it is not the toughest truggy out of the box, but it is the fastest. I am in the process of shimming the diffs and that should stop the clicking, ( mine was barely clicking and I drive on pavement most of the time), I added a stronger steering servo before I even broke in the engine and added a mx-3 radio, i did bend the rear tower at my first bash session, but it bent back into place. I recently added a Dadders roll cage, which I highly suggest, and 14mm adaptors to run t maxx wheels. Besides the towers which the caged fixed and the diffs which the shims will fix I really enjoy my Mammoth. Read up on the globalhobby forum and make a decision for yourself. There are ups and down about every r/c.