I don't know what all the fuss is about.
I've been using 4 of these coolers in cube cases for the past 3 years are so.
The fans are terrible as 3 of them have presented problems by not spinning up fast enough (probably caused by dirt build-up) so that they cause the system to halt at booting time.
Cleaning these fans is a nightmare as you have to get the fans out of under the heatsink. Usually, depending on the way you have installed them, this can only be done in one direction and even then you'll have to remove the RAM first.
Refitting them is equally frustrating if not more so.
Yes you can mount a 100mm or even a 120mm fan (with a bit of skill) on top, and get better cooling results, but this rather defeats the purpose of such a low profile cooler, even if you choose to use a slim type fan.
You could even choose to mount the fan so it sucks the air through the heatsink away from the motherboard, which in my cases would have been more effecient but all of this just makes it more of a hassle and even more expensive.
All in all I would not recommend this cooler just because of its fan and would rather look at a Prolimatech Samuel 17 as an alternative.