Summary: Nice and quiet fan, packaged well. PWM works well. Only issue was that the fan power cable was too short for my tower and I had to buy an adapter. I would imagine for mid towers and smaller this would not be a problem.
Summary: I ordered these fans to replace the stock fans on a 7950 graphics card and for my purposes it worked well. The fan had comparable output to the stock fans with the biggest advantage being much less noise. The ability to daisy chain fans and use one connection while retaining the pwn function without having to splice wires sold me (though I later soldered them anyways).
Summary: I had a great experience with Arctic customer service. Arctic contacted me, without being solicited, to find out if my fan was working well for me. Coincidentally, the fan had just stopped working and I conveyed that to customer service. They were very helpful and sent out a replacement right away. Everything is working well now and I'm very pleased with my purchase.
Summary: This is a really quiet fan.. Like seriously.. plus this is PWM (Pulse Width Modulator). One thing to note is that the wires are fragile looking and I almost broke them off due to how thin they are. But once you install them, the wires won't be in the way. I bought this to replace a dead fan in the family computer and the it has served me well until now.
Summary: Purchased to replace the 5 loud fans in my Dell 2900 5U beast of a server, had to modify the connectors (because Dell has a different plug), they worked great and fit well, my once jet engine loud server is very quiet most of the time, only problem the Dell's built in management software does not like the low fan speeds so every 5 to 10 minutes the fans all spin up to max speed (making it loud once more), they do this for a minute or two and then slow down again, kinda...