I am curious - for curious see lazy, as I don't want to spend the whole night in search mode - to know what people with noisy hard drives have replaced their drives with? I was considering Samsung but I rarely see them mentioned. As a system builder I used to favor IBM/Hitachi and Samsung drives for reliability and quietness respectively but with iMacs and Apple specific firmware I am in a new world. Should I be going for hardware that Apple are using themselves and where can I find firmware to flash them with, if needed. For instance the Seagate drive that people are having problems with is flashed with Apple specific firmware, 'AP25' unless the discussion I read between a Seagate tech and an Apple user was fiction, and Seagate's replacement firmware for said hard drives is, apparently, not for Macs.