A pocket PC is a mobile phone with a touch screen and an operating system like windows (windows ce).
The first Pocket PC I bought was an HTC Touch. It has nice features but a slow processor.
After a lot of research for the best Pocket PC I came to the conclusion that the O2 Flame is one of the best (February 2008).
It has a fantastic screen with 640×480 resolution, a 520MHz processor (fastest in Pocket PCs) and a 2MP auto-focus camera. It works with every major mobile phone carrier.
If you need GPS you will have to buy an external bluetooth GPS for 50$ (more or less).
The Glofish X800 came second as an option (it has GPS).
The I-Phone is still in beta status for me and I am eagerly awaiting a second version 
