fan advise

[jaxlad]

hay people hows it going? so i need some advice re my case and fans and what fans are good.
i have 'be quiet pure base 500' which has the two fans that came with it one as intake and one as out-take. my cpu cooler is 'be quiet dark rock 4'

so what i want to do is use the two stock fans to pull heat out the top and have three fans at the front to pull the air in. question is what fans are good for this? should i consider using a 3 fan aio cpu cooler to pull air in??

as always any help and advise most welcome

 

[jaxlad]

From what I read the pure wings 2 isn't great at pulling in air. So hoping for a better alternative

 

[jaxlad]

140s are fine don't mind a little noise but quiet is better not sure on budget Ifni have an idea what fans are best I can keep an eye out on black Friday lol