there's this thing called a search engine (google.com) or the button to search forums
http://www.systemcooling.com/ has great reviews on just about the top of the line HS
http://www.overclockers.com/home.asp has just about every HS with a chart containing all heatsinks (i go there for the water cool specs)
if you are not lazy and have a good engineering mind, you should be able to find out whether or not:
:the xp90 is good or bad
:the swiftech storm is copper or plastic
D maze is really a maze or not
good luck and good hunting
------------------------------------------------------------
give a man a fish, feed him for a day
teach a man to fish, feed him for life