Which system is the loudest/quietest?

[I like Bacon]

DS does make a sound! Turn the DS on and have the volume on mute, put your ear up to the DS and listen, you'll hear a very faint ringing sound.

lol

I've never seen a PS3 outside of a store so I don't know. My Wii is very quiet though. My brother is home from the army right now and when he plays the 360, it's loud!