Recommendation: DC Comics?

[Thorn Of Deucalion]

Hey, so I want to get into a few of the DC comics, I am interested in getting a trade each of the characters I like. Can anyone recommend one essential trade paperback/ min-series? I am mostly interested the more present darker storylines. (if any are) so far I picked up Nightwing: The Great Leap and really enjoyed it.

• Superman (I will pick up a few of these.)
• Green Lantern (Hal Jordan and Kyle Rayner)
• The Flash (Bart Allen and Wally West)
• Aquaman
• Batman
• Wonder Woman
• Supergirl
• Green Arrow

and maybe:
•Donna Troy
•Cyborg
•Black Canary

[figurechick]

Batman Recommendations:
All Star Batman and Robin
Batman and Son
Batman RIP