aka Wireless Number Portability before you switch.

That way you can keep your same #. I think it kicks in Nov. 24th. I'd recommend Nextel (since I work for them) but we are more expensive and tend to have poorer coverage in rural areas. We're mostly for people who can take advantage of the walkie talkie feature and business users.

The T-Mob seems to have the best plans out there, don't know what their service is like.