While these reviews are decent, there are several other websites that specialize in HSF reviews that do as well or better including Frosty Tech that uses multiple themal loads and CPU die sizes to get a better perspective on the HSFs true performance for the various applications. Their extensive HSF database allows a nice and easy compariosn of the thermal efficiency of most of the popular HSFs.
The Zalman is a decent HSF but not the best value when you can buy the superior Xigmatek Aegir for $59.95. In addition the cost of better fans makes the Zalman and other HSFs a very poor value. I mean when you need (3) fans to cool a CPU properly, you have a mediocre heatsink.