He gang,
I'm interested in switching from Sprint (my Treo 300) to ATT with the 600. I make frequent trips to Canada and currently pay an outrageous amount for roaming. I think ATT has a plan to make Canada part of your normal calling area.

1) Any comments on the current or future data plan costs from ATT? I've heard the are very expensive compared to other carriers.

2) Any US citizens have the Canada upgrade option? Please describe your plan and total costs.