Whats the best air cooler

The NH-D14 and FRIO OCK are pretty much neck and neck: http://www.kitguru.net/components/cooling/zardon/thermaltake-frio-ock-cooler-review-better-than-noctua-d14/5/

Go with which one you can find cheaper, the 212+ won't be as good as either, though most likely cheaper.