Should I upgrade to the iPhone 4S or wait for the Samsung Galaxy S4?

I have the option to upgrade from my old black berry curve to the iphone 4s for free, or I can wait a month to get the samsung galaxy s4. Also for free.

Added (1). Sorry I made a mistake, the Samsung Galaxy S4 I would have to pay for that one but it would be cheaper for me because I'm upgrading.

Added (2). Sorry I made a mistake, the Samsung Galaxy S4 I would have to pay for that one but it would be cheaper for me because I'm upgrading.

Wait for the Galaxy S4 and you will not be disappointed.

Get the samsung galaxy s4.it is better and you will be more up to date.

Wait for the s4 because its faster with more features, bigger screen and it beats the iphone 4s in every way possible. You will probly regret getting the 4s.