So ive been thinking about upgrading my iPhone 4 to the 4S, however i dont know if i should.

The benefits are minor to me such as the camera. I dont take pictures that often, but a nicer camera would be good.

Siri, yeaaaa... i might use it once in a while. not big on talking to my phone.

Faster processor, i could use. It would be nice to have a faster device as usual.

But i dont know if i should spend the extra money to upgrade, or just wait for the iPhone 5 next year. If i get the 4S i can sell it for more and spend less on the iPhone 5.

Any wisdom?