Need help with choosing case fans for Phanteks P400

[Yassassin]

Hello LTTians,
Need help with choosing case fans for my Phanteks P400 enclosure. And I've a doubt about what case fans should I mount at front of the case, should I go with 2*140mm or 3*120mm fans and also for exhaust even if I go with 2*140mm or 3*120mm intake fans, and if I choose three 140mm (ik it'll create negative air pressure, but it'll move more hot air out of the case technically right). I live in a place which has ambient temps around 30-35 degree celsius. As far as the enclosure's intake it has two intakes at front. And please recommend me good case fans (rgb and non-rgb). Most probably I'll order from Amazon US, since Amazon India price the same component double or thrice it's US MRP. Thanks in advance.
The following is the hierarchy from which I'll choose my pc components.
Amazon USA
Amazon India
The IT Depot
 

Please go through the following sites, and suggest me good case fans

[Firewrath9]

for front. I'd get a pair of 140mm fans, and use the stock fans for exhaust, For RGB, Deepcool makes good cheap 140mm, if you are looking for something higher-end that that, I'd recommend corsiar LL140s, they are expensive but look nice.

 

for non-RGB, depending on your budget, Arctic 140mm (less than 10$ ea.), Noctua Redux (13$) Phanteks 140mm (get the MP version) (~15$ ea.),  Silentwings 3 (23$), Noctua A14s (20-25 whether you want chromax or not), and for 30$, noiseblocker e-loops.

[Unkindness]

Highly recommend the Noctua A14S. Got 2 on my own machine.

[WoodenMarker]

What's your budget and what are your specs?

[Yassassin]

5 hours ago, WoodenMarker said:

What's your budget and what are your specs?

Max 25$ to 30$ a fan

[WoodenMarker]

12 hours ago, Yassassin said:

Max 25$ to 30$ a fan

What are your specs?

[Yassassin]

On 4/2/2019 at 3:42 AM, WoodenMarker said:

What are your specs?

Intel i7 6700k Processor | Asus Z170 Pro Gaming MB | Corsair Vengeance LPX DDR4 16 GB 2400 MHz RAM | nVidia ZOTAC GeFore GTX 750 Ti 2GB (IK, I need to really upgrade this xD) | Phanteks P400S | 1*7500 RPM 2TB HDD WD Black (Have to really add an SSD for boot drive) | Seasonic M12II-850 Watt Bronze PSU | CoolerMaster Hyper 212x CPU Cooler

[WoodenMarker]

18 hours ago, Yassassin said:

Intel i7 6700k Processor | Asus Z170 Pro Gaming MB | Corsair Vengeance LPX DDR4 16 GB 2400 MHz RAM | nVidia ZOTAC GeFore GTX 750 Ti 2GB (IK, I need to really upgrade this xD) | Phanteks P400S | 1*7500 RPM 2TB HDD WD Black (Have to really add an SSD for boot drive) | Seasonic M12II-850 Watt Bronze PSU | CoolerMaster Hyper 212x CPU Cooler

Maintaining positive airflow is just a matter of running your intakes at higher rpm than your exhausts. 

Why get new fans? Your system should already be easily cooled by the stock case fans.