Looking forward to hear you guys opinions on the fans. I'm always on the lookout for a quiet case fan as I'm really picky when it comes to noise.
Currently using 2 x Noiseblocker Black Silent Pros up front, but they don't appear to be putting out anywhere near what they claim. They are nice and quiet with their fluid dynamic bearings though.
I can at least say the 120MMs are silent as long as you mount them properly on rubber pins rather than bolting them to other stuff that can vibrate also.
I can ramp up my rubber pin mounted ones from my controller from off to 100% and not notice any additional noise.
As far as I can observe they shift as much air as the Noctuas, Akasa Vipers and stock Antec 900 case fans could. My 4.5GHz i7 with a Akasa Viper HSF (Now with BitFenix 120mm instead of the provided fan) idles at 25-35 and loads at 55-65 (depending on whether I am gaming or stress testing)
My 680 is no hotter than it was previously either since swapping to exclusive use of the BitFenix Spectres.