Yes, yes, yes.. get the AS5. I've heard nothing but good things about the zalman 7700cu but, alas.. it's atleast $45-$50.
This is what I'm using with my 64/3400 cpu ~click here~
and using it with the AS5, I idle around 29/31 and full load around 35/37 celsius. Not to mention.. it looks cool
<a href=\"http://www.democracynow.org\"><img src=\"http://i5.photobucket.com/albums/y165/smileygladhands/linkbanner468x60.gif\" border=\"0\"></a>
\"All over the place, from the popular culture to the propaganda system, there is constant pressure to make people feel that they are helpless, that the only role they can have is to ratify decisions and to consume.\" -Noam Chomsky