I take it back, the Hitachi drives *are* noisier than the standard WD.
I could never hear the WD's but this Hitachi is loud, clicking and churning 😡 I'm returning it anyway for a different reason but I'm hoping for another WD and as a side note the optical drive is an Optiarc and it has a serious burning issue, doesn't matter what DVD burn speed you use it's always slow hovering around 2-3x and yes I've tried different media etc.
Anyway hope your all doing well.