Hi, I'm trying to shop for fans but there are so many I don't want to make a bad buy. I want to replace the fans in my 550D and when I buy a H100i I will probably want to replace those fans too. The Noctua fans are too expensive but I don't want to buy cheap fans. Wit the case being a 550D and it has sound dampening maybe quietness isn't too important, just performance? Thanks for the help. Edit: I don't want molex fans, I want them to connect to my motherboard. Edit 2: I'm not entirely which fan spaces in the 550D can accept 140mm fans. So I don't want to buy fans that I won't be able to replace. I can clearly see on the case that the rear fan can be replaced with a 140, and a 140 can go on the bottom, but I'm unsure about the two front fans, does anyone know about them? Also I am looking for a 200mm fan to go on the side panel. Edit: Might actually get a H90 instead of a H100i.