Make sure you get the plus (+) version.
The original Aero 7 (w/70mm fan) had motor problems. If ran on lower speeds then the motor would sometimes burn out and people had their cpu fried. Coolermaster tells me this is corrected in the plus version. Which uses an 80mm fan. The one I was sent did not have this problem and may be just effected on batches sent to Hong Kong, where the complaints originated. Maybe.
Coolermaster also told me all USA retaliers should no longer have the bad ones.
You can purchase the fan seperatle, scroll down to the Aero
here.. Though that might be the 70mm version going by the specs.
It does cool very well. While the air isn't centered, it is more centered than any normal fans and because of that, this fan is more effective. The heatsink design is nothing new, just the unique fan is. And it is a major step in the right direction.
I'll be getting the plus version in soon.