I have a 16GB Black iPhone 3G S from a couple of months, bought since my previous phone - a six years old Nokia 6800 - has stopped working. Here is a list of the reasons that led me to this choice:

• Great for calling
• You can easily type messages an emails
• Easy to use
• Fast and responsive
• Works well with GMail/Google Reader/Google Calendar
• Expandable
• Beautiful to see
• Has a quite decent battery
• Lasting model
• Second hand keeps a good price
• Stylish

The choice was hard ... the most critical phase in the life cycle of a mobile phone is perhaps the purchase. I think many competing devices, offering Android/Windows Mobile/Palm/Black Berry/Symbian (etc...) a few dollars less, are sometimes complex, if not slow still. Maybe with half the money I could buy another model ... perhaps looking half beautiful, I probably would have satisfied half and I would have sold in half the time. What matters then, I'm even more convinced, is the user experience, the phone should be a service, shouldn't be a concern. So I say, the iPhone... is great :D