Samsung Galaxy S II or Iphone 5?

I'm caught in a dilemma. Should I get the Samsung Galaxy S II or wait for the Iphone 5? Have been scouting for a phone for quite some time now, but I have yet to decide which to get. Those phones that come with a less hefty price tag either has this or that but those that have the entire "package" comes with a hefty price tag. What should I do? Should I just get the Galaxy S II now or should I wait half a year for the iPhone 5?