I'll probably use the stock fan as a top exhaust fan in my case. What fans would you use to replace it if I wanted to run push-pull? I'm also looking for a fan to replace my rear exhaust fan and a fan to add to the bottom of my case for intake. I've seen people talking a lot about the Scythe Ultra Kaze 2000rpm ($10), the Scythe S-Flex ($16), and the Yate Loon Medium Speed ($5). Why is the yate loon so inexpensive when its faster than the S-Flex, and why bother with the S-Flex when you can get the faster Ultra Kaze for a small increase in noise? At what dB is noise no longer considered quiet/low level? Additional Info Case: Thermaltake Armor+ VH6000BWS Mobo: DFI LP LT P35 Oh, and if anyone knows a good fan for the northbridge of my motherboard recommendations for that are welcome as well!