This volume was a lot more confusing than the previous three volumes as there was the introduction of things that I haven't read about previously, such as anything relating to the Trinity War or Earth Two or JLA or Forever Evil etc., and was really learning about these events as they popped up in this volume. There seems to be a lot of cross-over and I don't believe Geoff Johns wrote it in a way for new readers of comics or DCU to understand everything that's going on. 
 I'm more confused about the ending, but I look forward to continuing on with Justice League. 
 I did enjoy the Superman/Batman camaraderie that was evident, the kinship that was formed.