I'm looking to replace my case fans and I dont really need anything to exciting, no LED's or anything, just something that pushes a good amount of air at a reasonable dB level. I found some Thermaltake's that push 37 cfm and are at 30 dBs. I really can't compare that volume to anything as I don't have a clue what my stock fans are at. Their just generics. Does anyone have any suggestions regarding these or should I look for something else?

A Vantec Stealth 80mm is a good choice i think. Since it pushes a reasonable amount of air and is almost totally silent. http://www.overclock.co.uk/customer/product.php?productid=16660&cat=281&page=1

lifetime garauntee i think too.