Which CPU cooler should I use and why?

Solution
Keep the build exactly as you have it.
The n200s stock cooling is fine for that build
The tx3 evo is a decent enough cooler for the 860k even if you want to overclock.
You'd be OK with the stock cooler for that CPU.

You can put a 160mm high cpu cooler in the case eg Cryorig H7 if you want

A coolermaster Hyper 212 evo will just squeeze in - 159mm.

The TX3 will fit easily. Any of them would be fine.

I'd change to a better PSU though eg Seasonic 520 or 550, XFX550 or Antec HCG520m - none of which are on that website.

Maybe try a Corsair VS550.
 

Mister Darius

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But will athlon x4 860k will be queit during gaming? As my Amd fx 6300 stock clock was like a turbo engine until I bought evo 212

 

Mister Darius

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So it would be a better idea ditching the aftermarket cooler and buying one extra case fan for positive air pressure?