The Gelid Black Edition is an excellent tower CPU cooler with a quality design and finish. Even a slightly overclocked Socket 2011 processor is kept below 50 degrees. But the Black Edition isn't the only cooler capable of this, and it fails to really set itself apart from the competition. Its performance is above-average, but nothing more. Its efficiency is average for Socket 1155 and slightly above-average for Socket 2011.
This means that the sizable price difference between the Black Edition and the Tranquilo Rev. 2 can't really be justified. One of our personal favorites in this segment, the 14 euro more affordable Cooler Master Hyper 412S (click here to compare their specifications) cools two degrees less than the Black Edition on average, but it's also more silent and much more affordable. The choice is self-evident.
In short, the Gelid Black Edition is a very good product, but not good enough for us to recommend it.