Glastonbury for me, because I like 2011 setlists and I think the performance is good, despite they fucked up the intro of Even Better Than The Real Thing and Bono's voice problems at times.
It also depends on what type of setlists you prefer. If you prefer setlists with No Line On The Horizon stuff, then look at the Rose Bowl, since Glastonbury only has Boots and Moment Of Surrender from it. Otherwise, Glasto
They're both really good but REALLY different types of shows. I really like the Rose Bowl imo, but Glasto has the same setlist as the show I was at (anaheim 2) soo it's a win/win.