Change Fans Corsair 540+Corsair h115i

[tweakstaR]

Hello.
I am looking at changing my Fans that are integrated to the Case and also the ones that are attached to my h115i.
What would you recommend? - These are the models i am looking at:
Corsair SP Series, Corsair AF Series, Corsair ML Series

 

[ajpaolello]

AF for case. SP for h115i