Ok, I may be a little late, but I just wanted to comment.
I am one of the early adopters who purchased the iphone at $599 and have no regrets. We all knew the price would drop, it was just sooner than later. The $100 kick back is a good gesture from apple. This was actually my first apple product and I am now an apple fan.
What I love about the iphone is the internet and ipod features. It's actually a mini computer on the go. I'm not a phone person, but this week I had to use the phone features more that normal and found that it is excellent as well. The feature to place a call on hold and answer or end is great. The ability to swap, add another caller, join a second caller to the first call etc, and conference was the best. I am sold even more on the iphone.
I previously had two Palm Treo's and find that the iphone tops it hands down. The only thing that I miss from the Treo is the ability to send SMS to mulitple persons, and the ability to cut and paste. With iphone if you have to send two people the same message, you need to type it all out twice.
Edge is not that bad, it is slower that wi-fi but a lot of places have wifi now, and if you are in an area that has it, it will pop up for you to choose a network to join.
Maps, CLock, CAlc, and Notes are what I use daily and are very convenient.
I would suggest you get the podcast "Today in iphone" and 'iCali', to learn all of the little tricks of the iphone, and you will enjoy the iphoen even more.
At $399 now, it is a steal..
, , and still feels it was worth it.