My dad once said to me, "You give a lot of books three stars." I do.
Saga's story continues to be solid (and pretty graphic) in the fourth volume. It took me a while to get back into the story, but that's because I had forgotten how the third volume ended. I might get it from the library again to refresh my memory.
I don't know how I'm going to wait for the next one. I might have to resort to buying the comic rather than waiting for the next volume to be published.