Pros: Using 4 of these in my Mastercase 3 at the front at 1 at the rear.
They are quiet and pump alot of air

Cons: no anti vibration (not that they have much to begin with)

Other Thoughts: only thing that would make these better is anti vibration mounts and possibly PWM vs the 3pin

Pros: Bright and quiet

Cons: None

Pros: Value

Cons: Color (not really a con)

Other Thoughts: It's cool... See what I did there?
Seriously, noise is not an issue for me, personally and all my fans run full bore when my box is on. I did actually single this one out for my liquid cooler cuz of the sheer volume of air I noticed it giving up while in the "window" of my case. Repurposed, if you will. With good results because it does, by itself, what my "push/pull" was doing. Thereby and wherefore freeing up another (not as powerful) fan to suck all by itself on the side of my tower.
Caught it on sale so, I saved a few bucks. And I am one to pass up any purchase that I don't feel confident saying I saved some jack on.
Color is adequate. Matches my build in no way whatsoever but the value offsets that little detail. If you don't like it, look at something else cuz my machine runs like a rayped ape and that's what I'm looking at.

Pros: -Super quite
-LED looks great!
-well built

Cons: -did not like the tapered screws, but no big deal

Other Thoughts: -great if your looking for black/red theme

Pros: -Good air flow.
-LED's still going strong
-2 years!

Cons: -Fan started getting louder and louder, which was a bit worrying. I ending up taking a detailed look at it when it does one of these loud episodes. Turns out the fan was slowly getting misaligned. I know the sticker is almost always not in the center of the fan, so I compared the blades, and they definitely showed quite a bit of wobble. It's even stopped rotating on the occasion.

Other Thoughts: By all means, I love Corsair fans. I bought some sp120's with the purchase of the af140 and those are still going strong. Probably an isolated event, as I could only find one other person with this issue. However, he did have the same AF140 LED fan, so maybe it's a possible issue with the LED line.

Get it, don't get it... It's a good fan, but the LED line obviously will suffer a bit in comparison to the non-LED counterparts.

Pros: This is a good fan. I'm using one as an exhaust in a Corsair Air 540 case. It does the job of the stock fan, and it looks better with the red LED.

The LED is fairly bright. I've used Cooler Master red LED fans before, and the Corsair versions are much brighter with seemingly the same performance.

This fan is also very quiet while performing well.

Cons: The holes where you screw in the fan are not very good. It feels like the screws will not fit inside like you are stripping them, but the screws will screw in. It's not really a big deal in the end, but it is worth noting.

Pros: Not noisy at even at full power
Red LEDs

Cons: None

Other Thoughts: I'd recommend people to buy this product
Would buy another one

Pros: -Quiet as can be
-Move a surprisingly high amount of air for fans at this price
-LEDs are decent but could be brighter. If you don't want your LEDs crazy bright, then these are the fan for you.
-Mounting screws were of better quality than average like you get with most case fans

Cons: None. Absolutely none.

Other Thoughts: Cannot go wrong buying the air series fans. Worth every penny and aesthetically pleasing.

Pros: Nice Fans, decent air flow, and quiet enough.

Cons: Wish the LED's were a bit brighter. With red, it doesn't really fill the case well.

Pros: These fans are very quiet as advertised and move a lot of air. LED's are very visible through the front panel on my build (Corsair Spec 3).

Cons: None yet.

Other Thoughts: Don't expect a ton of ambient case lighting from these. If you want your side panel window to pop, better get an extra LED strip or two.