To get the most out of a first time Invincible read, I'd recommend reading volumes 1 AND 2. #13 is a much better end of a book than #6 is. I read Invincible #102 today and was floored. 100 issues in and this series is still amazing. Also been reading alot of Grant Morrison's Batman. It seems nonsensical at first glance, but I get the feeling it'll make more sense if I read it a few times over.