Okay, for those people smashing on Batman, The Question, and The Elongated Man for various reasons I feel inclined to point out that these three are the greatest detectives in the DC comics universe. As for the Superman debate I dislike Superman because his power levels are inconsistent, for example, in Superman Returns he is stabbed by a piece of Kryptonite no bigger than your average pocket knife, has the tip of it broken off inside of him, and nearly dies from it. No more than 15 minutes later he lifts an entire continent made out of Kryptonite over his head, and flies it into space. Also I find it boring when I know the superhero's gonna win everytime. Even when he died fighting Doomsday, his body was stolen and taken back to the Fortress of Solitude and brought back to life. So what he has a new power, immortality?
Also he used to shoot a midget Superman, called the Super Homonculus, out of his fingers and when it started one upping him he contemplated killing because he was "Playing second fiddle to a miniature version of [his] self", making him kind of a huge asshole.