So now that I've made it into Act 2, I've been given a quest to kill three bandit leaders, Alira, Oak, and Kraityn.
I've just managed to make it to Alira, who has presented me with a conundrum: if I help her, she'll give me +40 Mana. Oak gives +40 Life. Whereas I have absolutely no idea what the old man will give me for killing all three.
Is the reward for slaying all three bandit leaders worth as much as this pretty significant jump in Mana?