Which case fan should I buy?

ej.wright

Prominent
Sep 4, 2017
22
0
510
So I want to improve the case fans that I have on the case I'm going to buy, which is the NZXT Noctis 450.
I have been looking at the Corsair - ML120 Pro 120mm LED Blue but I'm not sure if these are worth the £17 I pay for each.
Is CFM the most important thing to look for when buying fans?
Pretty much, what I am asking is for suggestions on what case fans to get or if it is even necessary to change my case fans, being the FN V2's that NZXT supply with the case.
Also, would I be able to just buy 7 of the same fans or will I need to buy different ones for intake and outtake.
Also, the noise of the fans doesn't bother me too much.
 
Solution
case fans will make little difference if you plan to overclock then buy an expensive cpu cooler because that will make the difference.

ej.wright

Prominent
Sep 4, 2017
22
0
510
But if I wanted to improve the cooling as I have plans of overclocking and I don't want to overheat my system, would you still not recommend me changing fans or would you recommend I upgrade them?