Guys i totally agree, the only reason why im going with the kraken x41 is because it performs the same than the nh d15, it is louder, but i dont mind that, its just that im goin for a small mid tower build and my case doesnt support the nh d15, and it looks a but nicer, thats all, my first choice was actually the noctua nh u14s or the phanteks ph tc 12dx blue, both amazing small single tower coolers, for a great price, and air coolers are alot cooler and more silent than AIO, this is just a choice of own likes, rational no, but i hope you guys understand, also i will start a youTube channel, and in the future im going to do thing like cpu coolers comparisons and gpu comparisons and that kind of stuff,
Bottem line is, air coolers is better and quiter, but is too bulky, and doesnt look as good as a water cooler that performs the same, it all comes down to a matter of personal choice and taste (and stupidity)