All heals pull hate but i would rather push the "OMFG" button and save a run than spam heals desperately and either see them die or pull hate from heal spam. A single benediction won't pull hate unless you are on the brink of it which you shouldn't be if you are managing your aggro and the Tank is doing their job correctly. Spaming a couple of Cure II's and a Cure within a few seconds however will push the aggro up really quickly. So yeah if it's off CD and somebody hits 5% HP and i know i probably won't need to save it for the Tank i'll use it on the DPS anytime over spam heals.