Rush, Def Leppard with Reo Speedwagon, Beastie Boys, Foo Fighters, Iron Maiden, Ozzy Osbourne or Van Halen?

Who's concert would you want to see? They're all playing near me....I already have Van Halen tickets but I have money for one more show and I'm having a rough time deciding lol. Thanks to all who help & if you've seen any of them live please tell me how they were. Once again, thanks!