Noctua Fans: S12 vs P12

[shotchki]

I am ordering all new fans for my Rosewill Blackbone and I have decided I want some quiet Noctua fans. I have my eyes on the ultra silent S12s as 120mm case fans (x2) and a P12 (x1) to attach to my Hyper 212 EVO. However, I have heard that P12s are quiet enough and they should be used for all of the fans. What is your advice?

NOTE: I have a Gigabyte Windforce 7970 that produces a good deal of heat, I don't know if that effects my decision.

 

[Calculatron]

S12s are more meant for just silent airflow. P12s are good all-around. NF-F12s are best for heatsink and radiator duty, although they'll be a bit louder.

 

[shotchki]

S12s are more meant for just silent airflow. P12s are good all-around. NF-F12s are best for heatsink and radiator duty, although they'll be a bit louder.

Silence is a big priority for me, so should I use all S12s or S12s for case fans and a P12 for the heatsink (NF-F12s are too loud for my needs.)

 

[Calculatron]

The latter.