50% of the time I hear the Caviar Black is really noisy, and the 50% of the other time I hear the Caviar Black is the best HDD and not that noisy. Is there anyone here who actually has that model and can give a good explanation about the situation? I want to buy today the Caviar Black 1TB but after three hours of research across the web, I'm not sure whether it's a must-buy or not.