Pros: Very good build quality, also very silent even when running at max rated RPM. The included inline resistor isn't even needed in my opinion.

Cons: Vibration. When mounted so the motor mount was facing upward (blowing air up), the fan vibrated quite noticeably, loudly at times. Even with the rubber pull-pins, it still made a lot of vibrating noise. I put a penny on the top of the case and it was sliding around that's how much vibration there was. However this isn't a fault of this particular manufacturer but rather the bearing type. Not sure if all fluid bearings are subject to this or not. The problem is the shaft that the actual fan blades are attached to is essentially floating, and having it facing down puts a lot of strain on the retention mechanism inside the motor/bearing housing. Any other orientation is perfectly fine as they don't make a bit of vibrating when mounted vertically, or even horizontally blowing air down (tho I don't know why you'd ever mount them like that). Bottom line: If you're looking into these fans as an option for top-mounted exhaust, keep looking. These fans do not serve that purpose.

Pros: Started out quiet and moves air well. They appear to be structurally sound. Good looks, nice mounting options Rubber in all the critical contact areas

Cons: It's only about a month and a half after I purchased this fan and it sounds like a HDD grinding away in my case. Actually, its louder. I just started running a SSD and now it is complete with its own HDD sound, coming from this fan! The 30 day RMA is up with Newegg (of course, right?) and so now I will attempt to get this taken care of by the manufacturer. It's frustrating in the fact that this is the fan at the bottom of my case and so now all the connections on my modular PSU must be unplugged in order to get this out for replacement.

Overall Review: I have three total of these, two have made noise intermittently and the one I need replacement for is making the same sound as an HDD only louder and constant. These would be absolutely great fans if they would stay quiet.

Pros: Excellent performance for the price. Silent at 7V. Noticeable noise at full speed, but it's mostly the sound of air, you can't actually hear the fan itself. Good static pressure for this price range as well.

Cons: Orange corners... blegh

Overall Review: I'm surprised these aren't more popular. They perform at least as well as Corsairs and are a bit quieter. Maybe it's the orange...

Pros: Silicon Anti-Vibration Pads, Vortex fins (aka focused flow fins), Noise/CFM believably close to manufacturers advertised specs (see other thoughts).

Cons: 1. Price. While this fan is of reasonable high quality and build, it feels like the manufacturer did just enough design for "solid", and not enough build for "rock solid"....yet prices the product in the "rock solid" market. "Cream and Brown" it ain't *wink*. 2. Limited Mounting Options. IMO - do not mount this fan in any orientation other that vertical (air blowing left/right) to avoide bearing noise/vibration. The bearing seems to need it's design reviewed. Horizontal mounting (air blowing up/down) causes clicking and a bit of turbine whine.

Overall Review: Specified airflow is believable as spec'd - pushes air very well in an open (non-radiator) setup. There are other fans with a higher static pressure better suited for radiators IMO. Noise level - VERY NICE! (If mounted vertically) Definitely this products saving grace. Using my bare ear as a measuring tool at full RMP - at 3" there is a slight motor turbine noise (kind of a faint whistle); at 6" the turbine noise disappears and what remains is the standard "white" noise of the airflow; at 12" the airflow noise is audible, but very quiet; at 3 feet the fan is all but inaudible. In a closed system (using the fans internally within a case), these fans are not audible at all. Of course noise level will increase with the use of dust filters, grills or other obstructions, but it's an increase in white noise rather than any noise generated by the mechanics of the fan itself. Overall opinion is 4 eggs for meeting advertised specs, and 1 egg off for price and limited mounting options.

Pros: Quiet through full rpm range. Excellent build quality. Moves plenty of air. NO LED's!! Wohoo!

Cons: None.

Overall Review: Bought this to replace a front intake fan with a bad bearing. Will probably buy a few more.

Pros: Thank goodness, no LED's. Very quiet. Moves a ton of air. Comes with all sorts of adapters and wires.

Cons: I couldn't figure out for the life of me how to use the included rubber mounting 'things' (used case screws instead) I looked around online and didn't see a good explanation anywhere. I guess you just shove them through? Price is high.

Overall Review: When I hooked these up directly to the 3 pin slots on my motherboard, they were running at 100% speed. That was a bit loud for my taste, so I used the included 3 prong cable that looks like it's just for extending the cable length. It reduced the speed down and made the nearly silent. I have 3 in my case. The whole system runs cool. If you want a quiet fan that moves a ton of air, this one is a winner. I'd recommend this to anyone looking to have a cool case, and not wanting to deal with having some adolescent LED filled case. That Vegas glow was cool for when I went to LAN parties, not so much now when I have coworkers over for a tour of the new house and dinner. 100% recommend as a 140mm fan. Quality but pricey.

Pros: -Installed Two - one for intake on the side of my case, and one for exhaust on the top. Decreased CPU temp by 2 degrees and system temp by 5 degrees. Very quiet, easy to install.

Cons: Website URL on packaging is incorrect, took a few searches to find the right one. No support info for fans on their website. No documentation to explain "second speed" requires using the included cables for slower fan speeds.

Overall Review: To reiterate: use the included short 3-pin cables for the "slower" speed setting - plug in w/o them for the max speed.

Pros: Incredible value. I replaced my Corsair AF140s (4 of them), with these, and they're as good as the Corsair, if not better. Incredible product, truly. I highly recommend Cougar, and will be using them in my next build.

Cons: I wish Cougar would sell these in all black, instead of having any orange trim pieces. I understand it's their thing, but it takes away from my stealth black setup. You can always paint them, I guess.

Overall Review: My configuration consists of 5 fans: 4 140mm, and 1 120mm. I've had Corsair AF120 and AF140 fans, Fractal D2 120mm and 140mm fans and now these, the Cougar 120mm and 140mm fans - and the Cougars are fantastic. I have three mounted vertically and two horizontally - no issues. Especially great while on sale.