Since one person here has a Moon Knight avatar, I have to choose him
Best moment: When Marlene was hospitalized and he gave a homeless person some cash to buy himself a nice meal instead of searching in dumpsters to take away some of his frustration.
Worst: To save a sunken submarine and people in it, he shoved an old lady with heart problem aside from entering the only escape pod there.
Hulk:
Best: Any time with the Defenders, or when Peter David wrote his stories.... to a certain point.
Worst: Having more wild and aggressive intents, imagining the corpses of all the heroes as Onslaught got defeated, and revels in that moment.