Need a fan, but which one?

[caserman]

Ok i'm eventually going to get a AMD phenom II x6 six core 3.2GHz.
http://www.overclockers.co.uk/showproduct.php?prodid=CP-266-AM

But i would like an aftermarket fan, but the thing is i havent a clue on which to buy...
I would like it to be reasonably quite, not really a budget and just like to keep a nice temperature at full load.
So any suggestions out there, shall respond tomorrow .

 

[caserman]

See i just couldn't choose one really ive got a Zalman atm (in my AMD Phenom II x4 3.2GHz)
http://www.overclockers.co.uk/showproduct.php?prodid=HS-054-ZA
Which is very quite indeed, but don't know whether its good enough