Summary: If you have a fan controller/room on your motherboard for more fans then I would get these fans, but if you only have molex connectors, then I would not recommend these, as they will be very loud
Pros: -The frosted blades spread the LEDs out nicely, and look cool even when the fan is off
Pros: Superb aesthetics. Superb cooling. Superb silence. Adjustable rings to help color match. (3 included means you can do as I plan to and paint one of the rings a different color, I plan on changing the Blue ring to a Green color for a green theme.)
Summary: If you're buying these fans for your Corsair case just take a look at what fans come with your case. There is very little if any difference between these AF120 and the AF120L that come in their cases.
Pros: Quiet, pushes good amount of air.
Cons: Not sure if everyone will experience this but since the fan holes for the screws weren't threaded it was a bit of a pain screwing the screws in.