Which Graphic Novels should I get?

So which of these Graphic novels should I pick up next? Legacy and Spiderman Reign look the most promising to me

-Ion: The Torchbearer
-Green Lantern: Legacy
-Green Lantern: Passing the Torch
-Green Lantern Corps
-Green Lantern Vol. 1-3
-Green Lantern Sleepers
-Batman: Year One
-Power Girl
-Countdown: Arena
-Spiderman: One More Day
-Spiderman: The Other
-Spiderman: Reign
-Spider-Girl
-Sensational Spiderman: Back in Black