Gotta say, Walk On is probably tied for my favorite song by them, along with The Fly. Every perfomance I've listened to of the song has been uplifting. It seems that on this last tour, and especially on the 2011 legs of it, the preaching took a backseat to the music. Bono's preaching was really mainly on the 05/06 Vertigo Tour.

I think the Slane Castle DVD is their best. They're playing their home crowd, and the raw emotion and power in most of the songs is so powerful. Apparently Bono had lost his father only days before the concert, so the performances are especially raw.

You can't really compare Bon Jovi and U2, they're totally different bands. It's just coincidental how they both hit it huge in 1987, had huge comeback singles in 2000, and continue to have massive tours decades after forming.