I have two comments.
1. True multitasking- Pocket PC
2. Works same as my pc

As you can see I prefer the pocket pc. I tried the Treo 300 and the Treo 600. Just was not intuitive, I don't want to reinvent the wheel. I also find my Hitachi G1000 more comfortable to use due to it's larger size. My large thumbs stumbled over them selves on the Treo 600. Each has there own + and - I prefer the pocket pc. I posted this on my G1000.