the truth about graphite/carbon reinforced parts?

[mattlynch]

Hi, a few years ago i read a race report that stated that most of the associated off road team drivers were using the standard b4 plastics in highly stressed parts of there cars as they found the graphite parts were too fragile,(better to lap 0.2 seconds a lap slower and finish the race than to not finish at all) , i had the same experience with my tc4 team , when i upgraded to graphite parts they would break at an alarming rate.. i am now having similar issues with the ansmann x-pro, replaced the broken parts with mad rat bits and no more breakage at those parts, (rear hubs mostly)
anyone find that graphite parts actualy bring an advantage worth having ?