Thanks. You're right; from the start I set my mind up that money was not going to be the issue.
There's one thing I wanted to add; many people go out and purchase the quietest cooling fan and coolest fan grills. A quiet cooling fan is fine, even if it cost more, but the grills, specially the fancy ones, are not designed by people with knowledge in physics. Most fancy looking grills create air turbulence just before the rush of air reaches the fan. It might not seem like a lot at first, until one runs the cooling fans without the grills…the sound level just drops dramatically.
Grills can protect fans and fingers, especially if you have little children, but the best bet are the ones with round wires, as they provide better transition as the air goes through. Or get a larger fan, 120mm, that can draw a larger amount of air at lower speed…the lower speed reduces noise substantially.