So I've heard good things about the New 52 Earth 2 series, but I've never read it. Comixology is having a fantastic DC sale right now (everything is pretty much $4.99) so I picked up the 6 volumes of Earth 2 and both volumes of Worlds End. I was curious though, is "Earth 2 Society" essential to pick up? Or can I just stop after Worlds End?

I've also heard it's not good reading after Robinson was done, but I figured at this price I might as well get the lot of them.