Case Fans

[Antimatter3009]

I'm looking to replace my current, default case fans with some quieter ones. However, I'm not sure what exactly I'll need to cool my case adequately. You can see my system in my sig. My fan setup is two in front blowing in, two in back blowing out, and one on the side blowing in (I think). All are 80mm and the case is a full tower. Currently the fans are very (very very) loud, so I'm looking for as quiet as I can get while still maintaing a decent temperature. Note that nothing in my system is OCed and I'm not really interested in changing that, so it's just default. I looked around a bit and found two fans that look pretty good:

COOLER MASTER SAF-S84-E1
http://www.newegg.com/Product/Product.asp?item=N82E16811999071

Panaflow Ultra-Quiet
http://www.sidewindercomputers.com/pa80br.html

Those are the two that I've come up with. The Cooler Master is the least loud (and cheapest) but I'm not sure it pushes enough air. Do you think five of those would be good enough for my system? Do you have any other suggestions? Please keep in mind that I need to replace five fans, so the cheaper the better. I'm looking to keep this under ~$50 including shipping. Thanks.

 

[RogueTrip]

http://www.xoxide.com/cooler-master-6-pack-80mm-fans.html

wait for these to get back in stock, alot better deal, and 2000RPM instead of 1400, you can barely hear them at 2k

Edit, if you can handle colored ones, maybe one of those 6 packs are in stock opposed to the black ones.

 

[Antimatter3009]

Newegg has those in stock. Think I'll grab a set. Worst case is I'm out 15 bucks after shipping (and they can't be worse than what I have now). Thanks.