Summary: Been a customer for a while. Hopefully they will replace or refund. Rather have the refund for now. Not sure I will buy these again.
Pros: None on these.
Cons: Bought 3 of these. While installing a mount on each fan tore out. The plastic insert thats in the rubber corners just tears right out. Leaving the screw where it will spin and not tighten. Even worse you have to just tear it out remove it from the case. I have the AF 140 and had no issue.
Summary: Using this little guy on the bottom of my case, blowing upward (have a dust filter so not so worried there), to cast a little green glow over my internals. The green is just a shade lighter than the standard shade Razr users in their keyboards and mice.
Pros: Very quiet, LEDs are nice and bright, but not overly so, can feel air coming off fan so I know it works. The three pin power cable is plenty long enough, so I can reach around back my motherboard and plug into any of the three sys fan connections with no trouble.
Pros: 1 of the 2 fans was DOA It's frustrating when your all excited about building a $3000 gaming pc. Only to turn it on and realize that the nice fans you got to replace the stock don't work. Way to go Corsair in the last year my Corsair mouse died, the top fan in my graphite 300 case died, now this..
Pros: Quiet, looks great aesthetically, great airflow
Cons: The 3-pin cables are a little short and gave me a lot of trouble when installing. And the rubber mounts are a tight fit for the screws. One of mine got stuck even after I checked if it was crooked and wouldn't come out. I don't know if that's just me though.
Summary: I am new to building so I ended up using all three versions of the SP 120 fans and these make much more of a difference than I expected. I have both on a hyper 212 evo cooling an fx8350 at 4.5ghz. At idle temps are below 20c and barely hit 58c during heavy gaming.