Best cooler for i5 750?

These are latest tests I have seen, extremely well done testing but on 1366 CPU

http://benchmarkreviews.com/index.php?option=com_content&task=view&id=492&Itemid=62&limit=1&limitstart=4

ProlimaTech Megahalems 24.29°C over ambient -4°C
Thermalright Venomous-X 24.47°C over ambient -4°C
Scythe Mugen-2 SCMG-2000 26.03°C over ambient -3°C
Cogage Arrow 26.53°C over ambient -3°C
Titan FENRIR TTC-NK85TZ 27.92°C over ambient -1°C
Zalman CNPS10X-Performa 28.08°C over ambient -1°C
Coolink Corator-DS 28.38°C over ambient -1°C
Cogage TRUE Spirit 28.39°C over ambient -1°C
Noctual NH-D14 (2x 140) 29.10°C over ambient
ProlimaTech Armageddon 29.26°C over ambient
Thermalright Ultra-120 eXtreme 29.40°C over ambient
CyberPowerPC XtremeGear HP-1216B 29.42°C over ambient
3R-System IceAge Prima Boss-II IA-120B2 29.46°C over ambient
Tuniq Tower-120 Extreme 29.52°C over ambient
Intel DBX-B ATS (Performance) 29.65°C over ambient
Xigmatek Balder SD1283 CAC-SXHH3-U06 30.00°C over ambient +1°C
Xigmatek Thor's Hammer S126384 30.76°C over ambient +1°C
Noctua NH-U12P 31.68°C over ambient +2°C
Thermaltake Contac-29 CLP0568 32.60°C over ambient +3°C
 
I'd get the Megahalems with $100 to spend ($65 for HS, $22 for twin PWM hi quality fans, $7 each for TIM and PWM Y cable splitter.

http://www.frozencpu.com/products/8807/cpu-pro-01/Prolimatech_Megahalems_Rev_B_Intel_CPU_Heatsink_LGA_775_1156_1366_AM2_AM2_AM3_Hot_Item.html
http://www.frozencpu.com/products/7038/thr-41/Innovation_Cooling_Diamond_7_Carat_Thermal_Compound_-_15_Grams.html?id=BZWnrfIC
http://www.frozencpu.com/products/10026/fan-639/Scythe_Slip_Stream_120mm_x_25mm_PWM_Fan_-_SY1225SL12LM-P.html?tl=g36c365s936
http://www.frozencpu.com/products/8418/cab-150/FrozenCPU_PMW_Y_Splitter_Cable.html


For $50 budget, I'd get the 3rd place finisher
http://www.newegg.com/Product/Product.aspx?Item=N82E16835185142
 
The Megahalem could passive cool a stock i5 - it is serious overkill. So unless that appeals to you save a little $$ and get the Hyper 212+. While certainly a notch below the PM, it still is an excellent cooler. It keeps my OC'ed i5 below 56C on the Cores.