Mine isn't noisy per se. Has a 5-speed fan controller for the case fans. Guess it depends what you put in it. I hear the CPU cooler fans a little on load, but mostly my GPU fans when on load. The excellent airflow helps to keep temps down and the noise doesn't bother me when gaming. A noise-dampening kit wouldn't work out for me.
One of my favourite things is the 120/140mm mount for a fan on the HDD cage, to feed the GPU. Worth getting an extra fan for it (the only 140mm that comes with the case is the rear fan, the others are 3 x 200mm).