Zalman Fan Which Zalman CPU Fan Should I Get?

Which Zalman CPU fan should I get? - zalman fan

Thus, in a new CPU fan gets today. In stuck with 3 options, the 9700 NT Zalman, extremes, 9900LED, and 10x.

I can not find any benchmarks comparing the temperature of 3 under the same conditions. The 9700 actually more expensive than 9900, which I would be faster than the number currently the largest to be identified, though I know it's not always the case with computer parts. But even here there are Core 2 Quad, more than their counterparts Core i7 costs>. "

So, what do you think? The coolers are all good in each class in the same price $ 10. The NT-9700, 9900LED, or 10x Extreme?