The best air cooler, if there's such a thing, would have to be the Tuniq Tower 120; performance wise, i know of nothing better. There's also the Thermalright Ultra-120, Noctua NH-U12F, Scythe Ninja/Infinity/Mine, Zalman 9500/9700, Thermaltake Big Typhoon and Arctic Cooling Freezer 7 Pro. Check...