Silencio! (Corsair AF 120 Quiet Edition)
Just installed a pair of Corsair AF 120 Quiet Edition @ 7V in my case. What a difference! Definitely an improvement over the stock fans. The installation was straight forward, and nice that they include 7V resistor so that you can run them at slow speed without any hiccups. Very nice package. They also have rubber mountings to minimize vibrations.
Worth a consideration if you're looking for some quiet case fans.
i7-5820K@4.4Ghz + H100i| 16GB DDR4-2133Mhz | Asrock X99X Killer | Samsung EVO 750GB | 3TB HDD | Corsair AX860 | XFX 7990 | Corsair 550D | Achieva Shimian 2560x1440
Sound: Cambridge Audio DacMagic | NAD-T750 | Dali Mentor Menuet | B&W ASW608 | Beyerdynamic DT 880
Camera: Nikon D5100 | Sigma 10-20mm f/4-5.6 + Nikkor 35mm f/1.8 + 85mm f/1.8G | Nissin Di600 | Phone: Lumia 920