Re: DC's New 52: Reviews and Discussion (Spoilers welcolme and likely)
I thought Justice League #1
was good as far as being the opening act of an origin story.
As far as Flashpoint #5
...well, I think Star Trek XI
did a better job in establishing an alternate universe, but I thought it ended well with its final pages.
"Don't sweat the small stuff--it makes you small-minded..."