Hello Alphator, in general, if there is space in the case and an air cooler and the air cooler does not collide with the graphics card, air cooling is the quieter and better option.
Since I'm not a fan of the BeQuiet cooler installation, I recommend Noctua coolers to everyone. If you have room in your case for this one
Noctua NH-D15S (16.50cm) then I would recommend this one. The difference to the D15 is the asymmetric design of the cooler for better compatibility with graphics cards, the difference between 1 and 2 fans on the heatsink is also only one degree Celsius with normal airflow in the case.
Hope I could help!