I upgraded to a Tour from my old "brick" blackberry, which I've had for 3 years with not a hint of trouble. I love the Tour, but if this issue can't be corrected it goes back. Whenever I travel around the phone losses the internet services, which is understandable, but upon returning to coverage it will not reacquire the internet service. The Mobile voice connection remains fine. The help desk told me I must do a hard reset (battery removal) each time. This is not acceptable, as I would be doing this multiple times a day.
I would be cautious of getting the Tour until you know this has been fixed. If anyone can help, I'd love it. Sure would hate to give my Tour up!