Thermaltake Aircooler and Titan TTC-M5AB
Both make a difference with their special design: The radial body promises a good cooling. Reality shows that it is not the case. Performance is below average. Both models have a good reputation among overclockers but the design is not optimal.
Both models turn out to be optical show makers. Furthermore, there might be the case that these coolers cannot be installed on some mainboards due to their size.