Having just got the DVD boxset of volume 1, mulling over whether to buy volume 2, I'm watching volume 3 and I'm a little underwhelmed. Spoiler:
Sylar a good guy? Peter losing his powers again Mohinder going bad Adam Munroe, mastermind of volume 2 killed in about four scenes along with most of the villains of volume 2
I'm actually not sure why I'm still watching only that I've heard the Executive Producer has been let go (something about the direction of the show and falling ratings). Maybe it will pick up later...