I have Corsair 280mm (2 x 140 fans) installed in the Corsair case. There are different models (with RGB or with Elite Capellix LEDs etc.). My friend has H150i from Corsair and a friend has one from NZXT (z73, but costs 280 euros). The new one from Lian Li is also good.

If airflow is good, a cheap Alphacool or one from MSI is also sufficient, the CPU doesn't get too hot.