I want to buy a new wireless modem (aka GSM Phone) and a new PDA (Palm or other) that both work with a Mac OSX laptop and need advice about these devices.

Is there a recommended solution that will allow BOTH the PDA to surf the web OR the laptop to surf the web?

The need for these devices to BOTH access the web at different times seems obvious to me, but not to Palm or ATT! Thus, I've got the following questions:

1. Treo 600 - Does it work with Mac OSX?

2. Tungsten W vs Treo 600- Other than the camera in Treo 600 what else is the difference?

3. Does Sprint work for wireless or not (#777 not working for everyone?)?

4. Anybody happy with their wireless provider?

5. If using a GSM phone, what's good?