Summary: I almost always use head phones and I have a A/C that runs most of the day and I live in the city so theres no real quiet to test this out on but my old HDD is louder than this fan and the HDD is not THAT loud so yeah the fan is pretty damn quiet. The light it gives off is perfect and bright.
Summary: The red is brighter than Cooler Master's red fans; if brightness is your game, go with these fans. You won't be disappointed. Edit 7/14/2014: These fans are noisy when placed downward (blowing toward the bottom of the case). They rattle a lot, but hey, they were only 8 dollars.