Loki, Gaia and Aegir are all from Nordic mythology but are also now found in PC Cases as well as in Valhalla.  Loki and Gaia can be had for around $30 while the Aegir comes at twice the price and the sizes range as well from the diminutive 330g Loki to the 670g Aegir but all are 159mm tall or less.  Legit Reveiws proclaimed that they are all great values, each with their own traget system.

"The Aegir is Xigmatek’s high-end offering, and it carries a high end price. Coming in at $59.99 shipped it is not the most expensive cooler we have ever tested but it performed nicely. Coming near the top of the charts throughout most of the testing the Aegir was on par with coolers that cost $20 to $30 more. The fan for the Aegir was nice as well. At 100% speed the fan is quiet. It was hard to pick out the Aegir’s fan from the Scythe case fans I use in the test system…"

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CASES & COOLING