I think I enjoy books where the character is world weary/exasperated by idiots and/or slightly crazy.
I have a large amount of books at home, with my favorites managing to stay, and ones I don't enjoy/aren't good enough, end up being recycled to new homes.
I've been reading quite a bit of FanFiction recently as well (see my Sig) and there are some quality authors out there. I think the appeal of FanFiction is that the world and characters are pre-created, and you can edit/revise them to suit a new story. You end up having to wade through a lot of Mary/Mark Sues and random Slash to find anything of value, but it seems worth it in the end.
I recommend reading Harry Potter: Methods Of Rationality.