My experience is a little skewed. My 130x has a torque tube and my blade 400 has a belt. Not really an apples to apples comparison due to the size difference. I will say however, the belt isn't the only thing that can fail in a belt drive. My last crash on the 400 was due to the belt drive gear being worn completely smooth. It would start fine, but when I hit idle up the friction wasn't enough to hold anymore and it just started spinning on the belt. Result, awesome piro, at least until it hit the ground.