Go to the one most likely not to play there again within the next five years. The Lips have an incredible stage show/spectacle and the music is amazing live. The Charlatans are very beloved and they put on a good show, but its more straightforward, the Lips go all out live.
You're such a twat Babu. I'd love to see The Flaming Lips live so given the choice I'd go for them at the moment, but I've seen The Charlatans a hundred and fucking twelve times and they're always great too. They don't tend to tour outside the UK that much though.