That's really crazy to me. I have tested two and both have the clicking sound as well as a constant, noticeable "woosh". The second one also vibrated a lot so I decided to go back to the original one that I purchased. Ya'll really don't hear either of these sounds? The clicks are quiet enough that you really need to be in near silence, but when you are, they are noticeable and slightly annoying. The "woosh" is noticeable at all points for me. The stock drive was virtually silent so maybe I am just spoiled, but both of these drives are considerably louder than the one that they replaced.
I know two drives hardly counts as an ample sample size, but coupled with the multitude of reports of these same problems, I figured this was just a flaw of the drive. If y'all truly don't hear these noises in relatively quiet conditions, I will seriously consider going in for an exchange.