Dazzled!! So happy for you that DG got you the GA!
First night we were back rail inside the pit on sort of between Bono and Edge, but closer to Edge. Could have had front rail in front of Edge, but I wanted back rail - more room, and a better view. Second night we were back by the soundboard, but closer to the side - as in, the railing at the front of the soundboard extends to each side, so, we were back there, again on Edge's side of the stadium. For that show, we didn't even go in until about 8:45. It was an amazing spot.
The pit and outer rail are great and all, but the staging, the spectacle of it all is SO immense that when you're up close, the band is really spread out, so you can really only "see/pay attention to" one member at a time, you can't take it all in. Plus, the guys have more area to cover on stage/on the catwalk, so that when they're near you it's fine, but when they're not, they're much farther away than they are in an arena show. And, you REALLY can't appreciate the claw and screen up close, and the claw is so awesome that it deserves to be appreciated.
And like Sarah said, even though we were back in a stadium, it still seemed like we were closer than we were when we were at the back of the ACC (arena) for the one Vertigo show. They really did achieve intimacy in a stadium.
Anyway, that's my take on it. Had an amazing time as always.