I've had mine for a few weeks now and I can say there is enough difference in the speed to warrant a change. I've had the 1st Gen, the 3G and now this 3Gs...I'm also getting better reception over the same area and I spend a lot of time on a cell phone so it is not a fluke. I've always loved the iPhone for the Apps but thought it was a substandard phone in terms of call quality. AT&T still SUCKS but the 3Gs is a decent phone with Great Apps.