Hey Geby, are your 200mm case fan quiet/loud?
The front 200mm case fan on my 650D is making this annoying buzzing sound and I finally switched it out for CoolerMaster 200mm MegaFlow 200mm fan. I think the problem might be a design flaw of the honeycomb holes in front of the fan. Anyway, now it's smooth and quiet (minus the ricer red LED on the fans. I really liked it without the stupid LEDs) and I feel the need of replacing the 2x120mm fans on the H70. LOL.
BTW if you are looking to switch out the 200mm fans I found an awesome price for them. under $9 for the Coolermaster Megaflows.