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If you have got a 3g/3gs or it's your first IPhone i will say that the new 4s will be really a great phone. If you have come from an IPhone 4 then it's a harder decision to make. I thought about getting a Galaxy SII and then i thought no i'm being really stupid. For me the screen size was the only issue and i'm not willing to trade all that the IPhone has just to get less than an extra inch.
 
This will be my first iPhone after switching from Android but I own an iTouch and a bunch of my friends/family own the iPhone 4 so I know what iOS is like.

In my honest opinion, I was a bit underwhelmed by Apple's conference. They're pumping the exact same specs that other android phones have had for 6 months now (AND at a smaller form factor). I'd roll with the Nexus Prime this coming holiday season but I want Apple's superior app ecosystem.
 
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