TechPowerUp posted a review on the DeepCool AK500
A quote from the article:
DeepCool's AK500 slots in between the AK620 and the AK400, proving to be a near-perfect balance between the two. It delivers solid performance, a clean visual aesthetic, and, best of all, offers exceptional performance per dollar. Making it a solid contender in the mid-range air cooler market.DeepCool AK500 Review