I bought the twin pack of the Corsair SP120 fans for my water cooled rig. I have an XSPC Raystorm rs360 water cooling kit with an added on Enzotech MST88 waterblock on my MOSFETs. My CPU is an overclocked AMD FX8350 @5Ghz at 1.5V. I've been researching fans for months. Finally I watched a couple videos on YouTube as well as some spec charts and decided to pick these up. The price is a bit steep, but these fans were worth it. They are what they say they are - high performance, static pressure fans. And they performance how I hoped they would perform! On idle with the fan speed turned town, the move more air than my stock XSPC Xinrulian 1650RPM fans. On full speed, my PC runs (on idle) at room temperature overclocked (which I've never seen with this CPU!). On Max load, I've seen a 5-10 celcius temperature drop. These thing really move air!I replaced two fans on my radiator. One fan remaining is one of the stock fans and on top I have a 2,000RPM Antec LED fan to help with the "push pull" method. I feel these two fans are powerful enough without replacing them all (although I would love to change them all if the price wasn't so much). Packaging was great. Frustration free box that easily slides out of the packaging. The color options are nice although a black band would have been nice for those who don't like any color at all.Some cons and why I docked a star. First off, without a fan controller, these things are noisy. On max they are a bit on the noisy side. This was to be expected but at mid range RPM, I also noticed since installing these a mild rattling sound. I think it might be positioning/mounting, but if it keeps it up I may have to RMA one of the fans (which honestly is a huge inconvenience/drag moving around and taking apart my massive PC). On very low RPM and full speed I do not notice the noise, however, and other than that the sound dampening edges are awesome and of high quality. Second, the cables - although nice and black, are somewhat short in length, and I wouldn't complain if they weren't just a few inches longer. I have the space but for others this might be a problem if trying to plug one end on the underside of a motherboard while trying to maintain good cable management. Lastly the price - I'm sorry but I have to complain $30 bucks for PC fans is alot. Even though this seems a better deal than the competition it's still alot to spend on plastic fans.To wrap things up:PROS1) Great quality fans with multiple color choices and sound dampening ends, great packaging2) Fantastic for high performance usage, moves alot of air for radiators3) Double pack is nice and a better deal than other high quality fans out thereCONS1) Mile rattling noise from one fan possibly having to RMA, audible wind on max setting2) short cables3) Steep price, even though a good deal still alot for fansGood tip - I accidentally put these fans in backwards at first. A very "noobish" mistake, but the corsair logo should actually face in "inward" position of the fans (so if they are blowing air out of your case, you should see the logo and colored band from the inside). Just be sure to note the fan position and don't pay attention to the color/logo of the fan. It's mean to be seen from inside a windowed case.Overall great purchase, I love these fans. I'm not sure if the rattly noise is something temporary or a bad fan. I'll post an update soon. But other than that the performance has been fantastic and I felt I got what i paid for. I would recommend these over the competition Noctua. In terms of price and aesthetics, these are a bit nicer (especially if you have a windowed case, I'm not a fan of the ugly, brown Noctuas). I've also posted a picture of these in my case.