RE: XTM Mammoth ST or Mayhem ST
I would go with the Mayhem ST. I bought one about 6 weeks ago and so far so good. Just make sure you locktite the screws on the steering. My steering suddenly got real sloppy and it was due to the screws backing out. The stock clutch shoes wear very quickly. That is easily fixed with the aluminum clutch shoes from Sportwerks. Other than those 2 things the truck has been flawless. The motor runs great and the diffs have given me no problems. I've also had some bad landings and cartwheeled the truck at high speed with no breakage. I have however bent the shocktowers a little which is no big deal. Just bend them back.