I purchased the Coolermaster Megaflow 200 about a month ago to mount at the top of my case. It's VERY quiet. I had a slight rubbing noise early on, but I just had to tweak the mounting screws on it. Would definitely recommend although I have no other 200mm fans to compare it to.
The LEDs are also very bright, from what I've seen it comes in at least 3-4 different colors.