The Palm Treo 600 is a sweet little smartphone, a combination of a PDA and cell phone. My dad let me use his for a while, and I would compare it to a lesser version of the iPhone, which is still a good thing. In fact, it might beat the iPhone in one category: the keyboard. The buttons are tiny, but incredibly easy to push, with both speed and accuracy. I love the keyboard. The Treo also provides internet access, and does a great job of rendering sites on the small screen. And it has a touch screen, so you can just tap links, or move your finger on the scrollbar to scroll, which is really cool.
The worst thing is that it has a tendency to crash somewhat often. Sometimes I'll just be browsing the web, and it will reset. Then it takes a half minute or so to start up again, which gets annoying.
Still, this is a very cool device that I would definately consider purchasing.