Nice write up.
I've never been a Xigmatek fan fan (no pun intended)
I had a Dark Knight CPU cooler and the fan that they used on it underperformed but made up for its poor performance by being loud.
If you get a chance, I recommend you try testing Cougar brand PWM fans.
I've been very impressed with their 120mm units so far (I have 9 of them)
The 140mm ones look to be quite similar to the 120s
Corsair Obsidian 800D -- Intel 2600K @4.8GHz -- Corsair H80 Cooler -- 16GB Corsair Vengeance DDR3 -- Corsair AX850 PSU -- Crucial M4 256GB SSD -- (2) XFX Brand AMD Radeon 6970s in Xfire -- (3) WD Caviar Black 2TB HDDs -- Dell U3011 LCD
Corsair Carbide 400 -- Intel 2500K @4.8GHz -- Corsair H80 Cooler -- 8GB Corsair Vengeance DDR3 -- Corsair TX650 PSU -- Crucial M4 256GB SSD -- XFX Brand AMD Radeon 6850 -- (3) WD Caviar Black 2TB HDDs -- Dell 2408FWP LCD