Panaflo- Best for performance
Artic Cooling- Great silent fans
Scythe- These should be ok. I have no idea how they perform though.
Do you really need a...
What? Are you talking about 1:1 image scaling?
If not LOL it will do 1900X1200 over the DVI and VGA. Why the hell will Acer make an LCD that will only do the max resolution on the VGA port? Might aswell shoot yourself.
EDIT- Holy crap your right. WTF?
Guys, dont we have better things to do than worry about a 1-2C temp difference with thermal paste?
Just get which-ever one you want, I'll bet it wont make a difference on temperatures. AS5, MX-1 and Zalman's thermal material products are all good.