Discotheque from the Best Of isn't radically different? Are you freaking kidding me right now? I love both, but one is a hyper-produced club track, and the 'new' version is a dirty, Stones-esque R&B groove-based song. I couldn't disagree more with that assessment.
As for Playboy Mansion, there's a fine line between clever and stupid. Miami is clever. Playboy Mansion was a good idea -- the hymn to trash, as Bono called it, but they lost their way, IMO.