Noctua NF-A14 PWM Vs Corsair AF140 Quiet edition

[D412KS41NT]

So I'm wondering which fan is the best. I know the noctua may be better but i think its too ugly. Are the Corsairs just about the same? My case is a corsair 750d heres my build http://pcpartpicker.com/p/y7TZqs. Dont mind the purchased i did that to seperate from core build.

 

[MasterDell]

AF140's/SP120's/AF120's are only good for front. I have used about 10+ of these things and wow are they a pain. When you try to screw them in the rubber comes out. Giggity. No but in all seriousness they are terrible. But once you get them in right they are sweet. The reason I say they are fine for the front is because fronts screw into the case rather than into the fan. Sorry that may be confusing 😛