"The standard Zalman heatsinks are held to might be a bit unfair,
but their history certainly makes them a target for any vendor who wants to
knock them off the top spot in the air-cooled heatsink industry. While the
dual-heatsink design is sound on paper, I don’t think it worked when it
was executed. I might be making something out of nothing because the
results were very close to the Monsoon III LT, but it just seems that their
heatsinks should stand out from the pack and not just stay even with them."
FULL STORY @ PCPER (http://www.pcper.com/article.php?aid=686)