DeepCool has absolutely nailed it with the AK620. This is possibly the best value high-performance dual tower air cooler on the market. At under £60 MSRP with great build quality, excellent thermal performance and low noise output, the AK620 seem like a bargain.
The DeepCool AS500 is a well-thought-out design that delivers not only solid performance but also acceptable noise levels. In regards to temperatures, it performs similarly to the Noctua NH-U12A, Scythe Fuma 2, and others, which is no small feat.