Beautiful but not silent
These fans are very nice for those who don't want too much RGB, and the promise is kept, the lighting is perfectly diffused on the front strip. But these fans have two flaws.
1. Their quality is uneven and 1 fan out of 2 produces a kind of crackling sound, almost inaudible at very low speed but which increases with speed and makes the sound unpleasant. (I have 4 of them, and two of them produce a sizzling or a little "clacking" sound, only one is really quiet) In short, apparently random manufacturing quality.
2. Depending on the colour the RGB lighting is not regular. On mine the reds are the same, but the blues are different, which makes the blues, purples or whites unusable.
As a result, they are not horrible, the effect is nice, but difficult to advise.