I have an iphone, and I love it! What's so great about is the updates. You know when a newer phone comes out for any other type of phone, if you want it, you have to buy it. With the iphone, the style is pretty much similar and you can plug it into itunes and it;ll update the phone with the newest software.
The apps are another great part of it! Lots of games, cool fitness applications, like a distance meter, a workout guide, tons of stuff!
I pay $30/month for internet, to be able to check my mail, use Safari, all that stuff. I even go on Cathe.com sometimes while in class haha.
It charges quickly...well ok it's just the best phone I've ever had! I love it!