The best case will have the following characteristics:
1. It must look good to YOU.
2. It must hold your parts.
3. I like to have at least two 120/140mm front intakes and no more than one 120mm rear exhaust.
That will supply sufficient cooling air for an overclocked K processor and a high end graphics card.
4. Have a washable front air filter.
By having all of the intake air come from one source and filtered, your parts will stay cleaner.
5. Have 160mm available for a good air cooler.
This lets you use some better tower type air coolers.
For only a modest oc, I would pick the scythe kotetsu.
For the very best cooling and a shot at a 5.0 overclock, there is nothing better than a noctua NH-D15s.
Just one case that ticks those points would be the similar looking NZXT 340 elite.
https://www.nzxt.com/product-overview/s340-elite