When it comes to 120mm fans, there are a lot of great options out there. However, if we had to pick just one, we would have to go with the Corsair LL120 RGB LED Fan. This fan is not only incredibly well-built and efficient, but it also features 16 independent RGB LEDs that can be controlled using Corsair's excellent iCUE software. Not to mention, it looks absolutely amazing when set up properly. If you're looking for the best 120mm fan money can buy, the Corsair LL120 should definitely be at the top of your list.