Below is a list of fans i can choose from. Which one would you choose in front of a thick dirty dust filter and which one would you choose as rear exhaust in front of a hexagon mesh? I´ve also added prices so you could take it into consideration, please help, i have no idea what to choose
Thermalright TR-TY147A PWM (12 euros)
Noctua NF A14 PWM (22 euros)
Be quiet pure wings 2 (12 euros)
Be quiet shadow wings (16 euros)
Be quiet silent wings 2 (20 euros)
Fractal Design Silent Series R3 (12 euros)
Fractal Design Dynamic GP-14 (16 euros)
Fractal Venturi HP-14 PWM (20 euros)
Edit: All are 140mm
Thermalright TR-TY147A PWM (12 euros)
Noctua NF A14 PWM (22 euros)
Be quiet pure wings 2 (12 euros)
Be quiet shadow wings (16 euros)
Be quiet silent wings 2 (20 euros)
Fractal Design Silent Series R3 (12 euros)
Fractal Design Dynamic GP-14 (16 euros)
Fractal Venturi HP-14 PWM (20 euros)
Edit: All are 140mm