I purchased this in 2011 and played it till about June of last year. It's a fantastic game; as my introduction to the series, it pushed me to go back and try Arkham Asylum. I love the expansiveness of Arkham City more, but its story is shorter and less compelling than the prequel.
My only complaint is that sometime between last June (2012) and this June, the game data has become corrupted. I searched online and a recommended fix is to delete it (not the saved game progress, but the game data) and re-install it. I tried that, and it didn't work. The disc is completely useless now; I can't play it again. All other games, including Arkham Asylum, work fine on the PS3, so it is not the system.
I loved the game, but it's highly unlikely I will buy one of their games again.