I searched and did not find any relevant posts, so if I missed it, my apologies.

I'm currently a happy N810 owner and am interested in possibly purchasing a N900. Before I do though, I need to know:

Is a data plan required if you use it on AT&T or another USA carrier? I don't want to have to pay for a data plan if the thing has WiFi already.

Also, while I'm at it...

How's the built in Calendar and other PIM software? I have GPE Calendar on my N810 and can't seem to get it to sync with my Google Calendar (using Erminig). I'm using the calendar to keep track of my newborn's first year (something I did with my Palm with my 1st daughter), so having a backup would be essential.

Thanks!