What are you putting this into/onto? What programs do you use? Is this for gaming? Productivity? What CPU are you putting this onto? Are you overclocking?
Most air coolers will get the job done very well. Depending on your enclosure and processor workload, I would recommend Noctua, Gelid, Scythe and pretty much any other high-end CPU cooler/fan manufacturer. If you can provide more specifics such as listed above, I can give a better recommendation.