The KPC2021 scores only average despite it's multitude of good features:

The big fan delivers very high air flow, the clip is broad and good, the heatsink is reasonably sized and even has a copper inlay. Most notably the contact area has an extremely smooth mirror finish superior to almost all other heatsinks on the market. This saves you the work of lapping and polishing the contact area, which is done by many cooling enthusiasts like overclockers.