Yeah, Detective Comics wasn't all there. I also suggest checking out Action Comics reboot, they did a fantastic job. Made it feel like watching a Superman movie. At least to me.
My brother really likes Nightwing. If you like 'anti-heroes' I suggest Deathstroke. I wish the Grifter was better, I was a big fan of WildC.A.T.S. growing up over at Image. Along with The Maxx, Young Blood and Bloodwulf.
Also the following 6 titles of the new 52 will be canceled after issue 8: Men of War, Mister Terrific, O.M.A.C, Hawk and Dove, Black Hawks and Static Shock.
Why I think they got low sales?
Men of War - This isn't a super hero comic. This is soldiers that live in times of super heroes. You always wonder why people hate Super Man, this is their side. Too bad its not very good and doesn't make me want to read the next issue.
Mister Terrific - Terrible name first of all. Also a black main character. This hero is based on science and imo lacked personality. I didn't give a shit about him in the first issue.
O.M.A.C. - A dude gets taken over by some evil computer, when it takes over he turns into O.M.A.C. a super powerful fin looking dude that takes orders like a zombie. Sorta the DC comics version of The Hulk without the great writing lol.
Hawk and Dove - The concept for this might have worked a long time ago. Basically Hawk = aggressive and Dove = peace maker. They are suppose to even themselves out. The first Dove, Hawk's brother died. In the first issue Hawk has to deal with his death and basically hates the new Dove. The new Dove, which is a woman, is keeping secrets about her brother and her. Ideas are there, don't think users got past the cheesy name/gimmick.
Static Shock - Hum... this was a TV show? Defiantly a wasted spot for something good. The first issue has some group of people planning to take down Static Shock cuz he is a cool kid with a tude.
I have not read Black Hawk yet. I'm still reading through the first 52 issues. As for the ones that MadeMan suggest I agree with Green Lantern, Justic League and the negative thing about Detective Comics. The others is not that I disagree, its that I have not read them yet. I'm doing them in release order. I'm actually on Red Lanterns then I read Resurrection Man and Suicide Squad etc. Worse issue I have read? Legion Lost.