ALIENWARE 17R5 Best Thermal Paste

Hi,

I just wanted some help regarding cooling cpu thermal paste. I have processor i7 4930mx (EXTREME EDITION) and I was thinking about overclocking my cpu. But it get quite heated when I start overclocking so I was wondering if I should apply some good thermal paste which can help keeping the processor temps real time low.  I want to know what would be the best thermal paste to apply on it to keep it really cool if I am overclocking the cpu?

I read somewhere that Cool laboratory Liquid ultra is a good option. But what I need is the BEST OPTION as it is an Extreme Processor so don't want to take risks. Any help would be appreciated. Thanks