I used to be indecisive, but now i'm not sure.
Posted by: EvilTaffyapple
but 20 years ago Judge Dredd was my favourite comic.
Any true Dredd fan would know that the comic is called 2000AD.
OP I would recommend Joker.
It is a Batman graphic novel that tells the tale of a young gangster trying to get close to the Joker.
It can be pretty twisted at times but it sure is pretty to look at and the dialogue flows amazingly well.
Also you should check out some of Frank Millers work from his prime.
Comics like The Dark Knight Returns, Hard Boiled, Sin City, Daredevil: The Man Without Fear.
All them are pretty gritty.
[Edited on 12.12.2012 11:30 PM PST]