240 packs in 6 months through my D08 on an indoor track without breaking anything, and i do crash hard often. There have been many more incidences of broken xrays at our track In that time, and there are more laps put in by vbc cars than xray lately. Durability has been fantastic going all of the way back to my D06 (which i still podium with in usgt....great car).
The hinge pins bend far too easily. Probably more people running Xray's, not much stronger than an Xray, any car can be broken though.