Coming from a guy who played fallout 3, Boderlands and all the downloadable content, and played some of dragon age I would say.
Buy borderlands if you like coop it is the best and loongest coop experience you will find.
Buy fallout if you played fallout 3 and prefer single player, i love fallout.
Dragon age was a bore to me because I thought the controls were to easy, boring and redundant plus the graphics lookk horrible. I saw the end watching my step bro beat it and it looked fun for the story.
I would go with borderlands!








