Which of these 4 fans is best ?

[bb gun]

I've been looking over the past few days on what case fan to take, and I'm perplexed to how many of them are and the differences in price, RPM, CFM, size etc... All of this made my 10 minute search turn into 5 days of research.

I've decided between

Noctua NF-AF14 FLX (30 €)
BeQuiet! Silent Wings 3 140mm (29 €)
BeQuiet! Silent Wings 3 140mm High Speed Edition (27 €)
Arctic F14 PWM (7 €)

Any opinions on which one do you guys think is best ?
I'm basically looking for a fan with good airflow for cooling my case compononents especially the GPU since I plan to overclock it, and want to cool it as much as possible. I don't mind the noise also because I'm wearing headphones all the time.

Also if anyone has any better 140mm fan suggestions, let me know and reasons for it.

Thanks.

EDIT: I will buy 2 of the fans, 1 will be at the front (slightly blocked by HDD cage), and the other one at the bottom (free from any obstruction), so I'm not sure whether to take 1 SP and 1 AF or 2 of any of these types.

 

[tolagarf]

From that list I only have experience with Noctua fans and they are hard to beat in both performance, endurance, and silence (excluding the Industrial versions though, as they tend to make motor noise).

But you might want to consider the PWM version of said fans, unless you specifically need DC fans.

 

[kitomano]

I personally think the Arctic is the best