Didn't know if I should start a separate thread to talk about Justice League #1 or just keep this one going.
I checked out JL #1. The artwork was good, but the story didn't knock it out the park. Spoilers below...
It introduced Batman, Green Lantern, and a pre-accident Vic Stone, and it also set up Darkseid as the Big Bad. The new armored Superman showed up at the end.
Also checked out Flashpoint #5. I thought it was a pretty meh ending, though the artwork was good and it at least focused on the Flash, who was supposed to be the main character of the whole thing. None of the side stories were really wrapped up, satisfactorily at least.