Pros: Decent airflow, relatively quiet, good price
Cons: Airflow no that great
That said, you can pick these up for ten bucks on sale. It is difficult to find a regular fan of decent quality at that price new. I have NEVER seen a fan this quiet for anywhere near this price. I doubt that this would make a decent radiator fan given the nature of the blades, but if you can afford a custom loop, then buy some deltas or nocturas if you want silence. If you just want to upgrade your case fans with something that will move air and give you some piece, then these do the job for a reasonable price.