I saw a couple of shows in LA. One in GA and one in the seats, middle of the arena.
From what I saw, I would probably tend to claim a rail spot either in the actual RZ area or (if the venue lets you) get on the GA rail.
Even along the catwalk is a lot of close up action.
e-stage is pretty classic too. You never know what might happen there.
The piano broke at one of the shows which provided a lot of entertainment with Bono buying some time interacting with the crowd.
Other than the seats right behind the goals (no view of the big screen) I don't think there is a bad spot in the house.
Thanks for the info Silverbullet, appreciate it!