which 120 mm fan for thermalright ultra extreme?

[cbhm]

so every test and every person i read about uses the scythe s-flex fan. however, after a junked antec case, i was wondering if the antec tri cool fans would work just as well. sound is no issue for me.

the scythe s-flex (on newegg) has only 63.7 cfm of flow
http://www.newegg.com/Product/Product.aspx?Item=N82E16835185006

there is another scythe model that is cheaper, but has a higher flow
http://www.newegg.com/Product/Product.aspx?Item=N82E16835185030

here is the antec fan, which has specs of 79 cfm.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835209011

which is best for the thermalright ultra 120 extreme of these three? sound and price are not an issue here

 

[Track]

I'm trying to decide the same thing.

It appears that the claims made by SilenX that their fans can do 90CFM and be in-audible are somehow false..

So what are we left with? Anything above 25 dbA is too much in my taste.