Hmmmn... you guys seem to neglect the fact that most of the iPhone 3G S improvements we see are not because of the phone's hardware but because of the 3.0 firmware.
Where does one get this free software upgrade? I for one did not even know that such a thing existed. I have only heard of the 3G S and didn't have any idea that there was an upgrade to the 3G. Hmmmm....