skele :
200 hours of cure time is horrendous :/
No kidding. When faced with a heatsink that doesn't have thermal paste (or for watercooling), I like arctic MX-4. It cools just as well, is a nicer consistency, and doesn't have to cure.
That being said, the difference between expensive goop like that or AS5, and the stuff that comes with a Hyper 212 EVO, is going to be a couple degrees at the very worst.