Asus, Arock, Gigabyte, MSI are good brands. It all boils down to specs.
The Asrock 990FX Extreme 3 has mediocre power phase design. Therefore you can't achieve stable overclocking with it. Moreso, Overclocking will be limited. you can't push it that far.
You should've gotten the Extreme 4 at the very least.
I got my processor OC to 4.3 and don't have any heat problems. Stable as can be.