Need advice on case fans

I'm looking for 120mm and 140mm case fans but don't know what to get. Is the artic cooling f12 or f14 any good and are they quiet?

https://www.youtube.com/watch?v=9uUXt7mE6Qg

Thanks, but those fans are way too expensive for me.

Noctua all the way anything else is a waste in my opinion. i baught 2 140mm flx noctua fans yesterday. Silent, high pressure, high airflow, something like a 5 or 7 year manufacturer warrenty. I baught 3 bitfinex fans broken out of the box, 2 nzxts also broken out of the box and 2 corsair fans also broken out of the box, bad luck i know but ill never buy another fan besides noctua again. ugly but whatever qualtiy comes first for noctua buy some black spray paint or something if u hate the colour lol. The nzxt fans with the clear paddle looking fan blades (fz series) and the black frame arnt bad either, i had bad experiences with the fans that came with my nzxt phantom aswell (fn series) 

I forgot to mention antec, good cheap all around fan, not as quiet as noctua but i had my antec fans running for years with no problems.

the fractal design  FD-FAN-SSR2-140  FD-FAN-SSR2-120

shhh they,re being quiet