^^^ The Big Shuriken is very quiet. My 140mm pwm case fan from Xigmatek is actually louder than the Shuriken, and both are quiet. Neither of them are nearly as loud as my GTX 460's cooling fan!!
The only time I hear my system is when everything else is off and I am folding on it.
The Lian-Li cases are 100% aluminum. Light and strong, logical and spacious, great fit and feel, and modular in the drive bays.