Looks and feels like an iPhone (even the packaging), except it is running a much more serious OS, Windows Mobile. I have an iPhone as well but I found most productive tasks can only be done on the Treo Pro. Simple things such as creating a Calendar entry, viewing appointments in home screen, typing a SMS, making notes, running Java apps etc. are just more effective when you have a proper keyboard, copy & paste and be able to switch back and forth between different apps. iPhone is great for many things, but it is not designed as a PDA. Comparing with other WM phones I found the ability to have both QWERTY keyboard and stylus & touch screen quite useful. If there is any complaint, I would say the default IE is not as easy to use when compared to iPhone. Downloading Opera solves that problem. Another minor thing I'd like to see improving is to automatically scan Wi-Fi whenever the phone is switched on. On Treo Pro you need to press the Wi-Fi button to activate it. Oh and the app start-up time is much faster than iPhone and other WM phones I've used.