Quiet PC Case?

[Triple-X]

What is the best case for the most cooling, and quietness? Right now all I have is a CPU cooler, and the power supply fans. My case isn't that good for modding, so I can't add any more fans to make it work. What case has lots of fans, but is also quiet? I was looking at the Antec Sonata II, on the box it says, "Silence is Beautiful" Is it really quiet? or is that just for show?

http://www.newegg.com/Product/Product.asp?Item=N82E16811129155

 

[Apokalipse]

I have a Lian-Li PC-V1000, which uses 2 120mm fans to cool the whole system. I replaced them with a couple of Thermaltake fans, but Cooler Master's fans are the quietest I've seen so far.

 

[straightv6]

http://www.silentpcreview.com/

 

[specialblend218]

Mountain mods UFO-2 filled vantec stealth's
www.mountainmods.com

Or Bill Owen's Tsunami
http://www.mnpctech.com/TsunamiVA3000.html