Pros: I'm a PC enthusiast that likes to build PC's and game at an occasional LAN party when time permits (take my review for what it's worth it to you).
Cons: Now, the only con I have about these fans is that you cannot put them horizontally facing down (so if you want them as top case exhaust fans - they won't work). I tried this and they became unstable and started to vibrate. I took them out and held one of them in my hand as it was running to confirm and in any other position they run smooth as butter (can't feel a thing) but as soon as I faced the fan downward it started to shake in my hand. This however, is a minor is...
Pros: Good lightweight fan design. Nice accessories (molex to four pin connector) and performed as advertised. I bought two to try out on my H70, they perform roughly the same as my GentleTyphoon AP-15's (sound and temperature wise), but they fall short during the stress testing however only by a few degrees. Good static pressure so if you can't get your hands on any AP-15's, these are great substitutes!
Pros: Extremely quiet, great CFM, high quality, undervolt very well.
Cons: Color, price, also the shroud is round instead of square so some pressure and flow is lost around the edges of the shroud. silencer gaskets don't seal around the edge so there really is no fix for this.