Well, I have a bit of OCD when it comes to the noise of my PC. I don't mind a quiet whooshing noise, but other types of noise really get into my head. Although this may seem silly, the IceQ just looks ridiculous to me. Besides, I've had bad experiences with HIS in the past, and I'd rather not go back to them.
Oh, and thank you Tiger! I didn't realize that chart listed noise as well.