The warhead evo is weak. it has alot of weak points to it. The rt x27 is supposed to be an upgraded warhead with stronger parts so if anything get the rtx. It looks like a cool truck but doing all my research when I was looking steered me away from the warhead. My local shop used to sell teh warhead but he stopped selling them because thats all he worked on. He has a huge box of broken parts that he showed me because I really wanted one. I left there not even thinking about getting one. There are soo many other better trucks for the money.