Where's your build mate?
a few Coolers to suggest for $50 (I presume you meant that)
http://pcpartpicker.com/part/evga-cpu-cooler-100fsc201kr
http://pcpartpicker.com/part/phanteks-cpu-cooler-phtc12dxrd
http://pcpartpicker.com/part/cryorig-cpu-cooler-h5universal
The Cryorig is the best there