iPhone 4s

Reports are very positive on Siri. Despite the obvious security concerns, if you have an internet connection it sounds like it really can work some magic. I wouldn't know first hand though. I'm not on the "s" line. My theory is people are either on the "s" line (3gs, 4s etc) or they're on the other line. The early termination fees encourage you to stay within your line. For a fee (for me currently $175) you can jump the line but otherwise you end up waiting for the next thing. While Siri, a better camera and getting rid of the hideous AT&T service are very temping, $300 for the phone + $175 for the early termination fee keeps me on the non-"S" line.