If all you intend to buy are the fans, then jab-tech.com can save you a couple of bucks over the egg on the Scythe units. Choose Priority Mail rather than the default shipping method to save a few more cents. Probably find a similar generic to the Rosewill (Rosewill rebadges products for the Egg - NOT an independent brand) for less as well - perhaps the Yate Loon SM models. I have a Kaze Jyu 100mm unit and it's pretty low noise.
.bh.