I'm looking for a low noise cooler for my AM2 X2 4000+ CPU. I have a lian-li PC-60B PLUSII case and an ASUS M2N32-SLI Deluxe motherboard. I'm open to any suggestions as long as the cooler is low noise and works well. I also want to replace my other 3 case fans, what are some good low noise fans? Which are good brands for both CPU and case cooling?