The Mad Force is very durable. I've had mine for about 8 mths and really havent had any problems. Parts are hard to find locally b/c it's not the most popular. So when you order parts just get 2 if you break it. As far as speed goes. Not faster then the Maxx out the box. All I can tell you is when I first got mine I went to a local track to see if it could keep up with the maxx and once thrid gear kicks in I think the question is answered rather quickly. I think RCCA had it at 43mph out the box which I believe was the fastest in the shoot out mag. But correct me if I'm worng. Either way upgrade the engine and forget about it. All I have is a 8p in it now and it's really fast. and will wheelie for a block. Take it from a owner of one. This truck is a great buy. Add some New Era parts and it's a piece of work.