Canon Powershot Sd880 Is
Canon Powershot What?

I can not really choose what I get Canon Powershot. Any help? Options: Powershot SD880 PowerShot SD790 IS PowerShot SD890 IS I know the 880 and 790 have great quality but I would like a 5x zoom for when I go to concerts. It is a 4x or 3x all you really need? Thanks for any help:)

SD890 IS gr8!