Question Case with good airflow for a 3080 ti and an eventual cpu upgrade recommendation with limited brands available

[Bullszeye]

Hey. I'm looking to buy a new PC case since my current one doesn't have enough airflow (cheap MS case). However, in my country only available brands are NZXT, cooler master and chieftec and they are literally 100-200 euros. I am ready to pay this much however I'm not sure if some of these cases are worth that much money. Thoughts?
The available cases are from these stores:
PC-GAMER
MB-COM
MULTICOM

 

[Lutfij]

Could you please list the specs to your build like so:
CPU(&CPU Cooler):
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:

We can then move forward with suggestions.

 

[Bullszeye]

Could you please list the specs to your build like so:
CPU(&CPU Cooler):
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:

We can then move forward with suggestions.

CPU: i5 9400f (will be a 5950x in a few weeks) + stock cooler
Motherboard:h310-m (will be upgraded for ryzen 5950x)
Ram: 32 gb 2666 mhz ( will also be upgraded to 3733 mhz)
SSD/HDD: 500 gb samsung 850 evo, 4 tb wd, 1 tb wd, 250 gb adata ssd
GPU: 3080 ti
PSU: nzxt c850p
Chassis: MS pro aquarius
OS: windows 10/ubuntu
Monitor: lg 27gl850

 

[geofelt]

I like the CM H500 with two front 200mm fans included.