I've been looking around and the new corsair power supplies seem to have a problem with chirping noises so i will most likely be avoiding corsair.
There have been some complaints about it, but it only a few users reporting them. When a company sells as many units as corsair, a defect that occurs once every thousand units is enough to generate a few thousand internet complaints. Its like DOA powers supplies. It happens, but it doesn't mean its common.
I don't see any reason to avoid them over this. If your one of the lucky few, just return it.