Pros: High Flow
Very Quiet
Braided cable
Vibration-dampening corners
High build quality
Comes with low noise adapter

Cons: None thus far

Other Thoughts: Picked up a few of these fans for my system and they are great. The fans even at 100% are not all that loud, but with the low noise adapter, I hear hardly any thing in my antec 300. The rubber mounts are also a great addition to help reduce vibrations.

These fans also move a good amount of air with the low noise adapter installed.

I wouldn't hesitate to purchase these again.

Pros: Whisper quiet and good airflow (80 CFM).

Cons: The rubber corners reduce the vibration but make it tricky to screw it in.
I attached these to the back of the Rosewill RSV-SATA-Cage-34 and the the Rosewill screws which are pretty long barely fit this fan.
Unfortunately there wasn't enough airflow to cool 4 WD Re drives so I had to go back to my Enermax fan which has 50% more airflow at about 120 CFM.

Other Thoughts: Good fan. Its probably best for the front or back of the case. Also its probably an upgrade from the radiator fans if you use water cooling.

If your going to use these to sool hard drives it is probably only good for desktop or at best NAS drives (<6000 RPM).

Pros: Good built quality and whisper quiet at operating RPM. No annoying noises while running.

Cons: It wasn't free.

Other Thoughts: Bought this fan to replace a 1800RPM power supply fan that was noisier than I liked. Much better design and quieter than the stock CoolerMaster PSU fan it replaced.

Running at 6V it's barely audible, 8V a whisper, 9V on up you can easily hear it running, full tilt at 12V and 1800RPM it's kind of loud.

Pros: Vibration dampening screwmounts; high CFM; low noise

Cons: Screws are just a bit short, an additional 2.5mm length would be nice.
Somewhat difficult to start the screws because of the vibration dampening mounts, another pair of hands was needed because of the Philips heads. TORX or Robertson heads would be better, but most people don't have drivers for them. That said, the fan is well worth that minor aggravation.

Other Thoughts: Quietest fan I've had, my mid-tower is actually cool to the touch; I'm very pleased with this fan. Newegg shipped the same day (I ordered early in the morning); with free shipping it still arrived in a timely manner, despite the December shipping crunch. Kudos to DHL and the USPS.

Pros: -Very silent for the type of fan it is. I didn't check every single fan on Newegg, but from what I could find, this is the fastest, most powerful 120mm fan. It doesn't make any noise at all! The only noise I can hear is the air being sucked through the vents. No humming or vibration or anything.

-High airflow for 120mm

-Works

Cons: None at the moment.

Other Thoughts: I bought this after I realized that 2 X 120mm intake fans and a 120mm and 80mm exhaust fan were not enough. This replaced the 80mm fan, it does a great job at what it's supposed to do.

If I have any problems with this fan, I will update the review, so don't worry about the low ownership time.

Pros: I Installed 3 of these a top my Corsair 800D case these replaced some aging Xigmatech fans that were getting noisier overtime. I have been very impressed on how much quieter they are. The only thing that can be heard is the air being sucked through the vents. Now my computer has a low rumble like a sports car instead of a jumbo jet.

Cons: none as of yet

Other Thoughts: I also run 3 of the 140mm version of this fan one to keep hard drives cool one for exhausts and one for intake. These are well constructed fans that move mass quantities of air and do it quietly. If you are in the market for fan replacement these should be considered.

Pros: Very quiet even at high speeds. Well made from the look and feel. Hear no vibration from desktop due to rubber corners. Better than other expensive brands. Nice black design with emblem. Cools my PC with two GPUs and overclocked i7-5820K CPU.

Cons: None.

Other Thoughts: Replaced my Corsair stock fans with these. In comparison, these fan pushes more air. Great purchase! Make sure to select the correct type for your desktop airflow. Venturi model has four types.

Pros: It is probably keeping everything cool since it is shooting a lot of air out because I can hear it.

Cons: It's louder than I was expecting and I don't know how to slower the speed so I don't hear it as much.

Other Thoughts: I used two of these as fan replacements for the corsair 100i because the corsair fans while quiet at time would become ridiculously loud under load. These fans are better than the stock fans on a corsair 100i in my opinion but on average these sound kind of loud. Maybe there's software out there to slow the fans down a bit? I can't find anything and I tried googling.

Specs:
CASE: Corsair Graphite 600t white edition
CPU: i5 4670k
Motherboard: MSI Z87-G45
Graphics Card: Msi gtx 760
Ram: 8 gigs of ddr3