I'd like to purchase the iPhone 4 next week when it's available to Sprint. I've been a loyal Sprint customer for over 5 years now. I just finished my two year contract at the end of July so I have an upgrade rate of $150.

As I stated, I'd like to get the iPhone 4 or 4S. My first question is:
Is the iPhone 4S REALLY worth paying the extra money for? I compared the two, and honestly feel there's not much of a difference that I'd regret (such as Siri, 8MP cam, etc.)

I'm thinking of the iPhone 4 but I'd like to hear other opinions as well.


Also, because I have my upgrade of $150, do I still pay the $99 new customer price or will it be more or less? I don't get the whole upgrade process.


Thank you for your responses!