I was actually wondering the same thing. I'll be purchasing this same cooler soon and would like to know exactly which paste is included with the package.
I've done some searching online and there doesn't seem to be a straight answer, but some suggest that the ThermalFusion 400 is included which is one of the higher end pastes if I'm not mistaken.
Can anyone confirm this or if one is better off getting an aftermarket TIM (lol on top of the aftermarket heatsink) xD