SRAM has had many issues with their components in the past. It's not that they don't work well enough, it' that they have been noisy and rough working, and have far more failures than Shimano & Campagnolo combined. SRAM always takes care of their customers when they have a warranty claim, but it's likely because they are aware of the problem with the components that failed.

I'm sure someone is gonna call me a troll because they think their personal experience trumps my professional experience, but I'm used to that. Flame away.