this is not even a topic for debate. the elevation version is the best here's why
- the ZooTV version was cool, but somewhat boring. they threw it in the very beginning of the show as an uptempo song to keep the setlist moving. but the performances were pretty simple. on the other hand, the Elevation version was a complete transformation. they played it as the last song before the encore, and then they moved it down to be the last song before the second encore. why did they put it in this position? to be a fucking show-stopper. to be a song they could leave the stage from. and it totally was. the beautiful extended intro, where everyone was kind of figuring out what was going on, the new key, which made the song longer because bono took over the entire chorus, and the single guitar, which let bono run around stage (like he's fucking supposed to). it was the same song as 9 years ago, but the arrangement and the lighting gave it a totally different feel -- a more defined, smoother sound compared to the brash ZooTV version, and instead of the crazy subliminal messages, they had the simple words on the screen ("home" during the chorus always got to me). that feel was the essence of the elevation tour, imo. that song did exactly what u2 wanted the elevation tour to do. they took this big stadium song, mixed it around, crammed it into a small arena, and it totally tore the building to shreds. they took an old, beat-up, garage-rock song and turned it into classic u2 -- exactly what they wanted to do with the entire elevation tour.
- the sound Edge gets out of his guitar is absolutely destructive. compared to the elevation versions, the ZooTV/Vertigo tour versions sound like he's playing with a fucking toy amp. there is no question that Edge's guitar sounds better on the elevation tour version of the fly than any other version of that song (or any song, for that matter). the slow intro? perfect, classic Edge delay, with the eventide 3000 whooshing around beautifully. the verses? HUGE, FAT, SIZZLING tone. the chorus? just enough delay, just enough overdrive. the solo? OH MY GOD. the notes fly off of his fucking guitar (no pun intended). it's indescribable. the best guitar tone i've ever heard is that solo on the elevation tour.
- as a side note, bono running around the heart during edge's solo and sticking to the screen at the end of the song are also pretty cool.