Which US cell carrier?

As of today AT&T completed their buy out of Alltel. (I am so glad) I have a BB 9850 now, I want a Z10 or a Z30 so bad! Alltel no longer even offers BlackBerry phones! With the take over, I need to know which carrier is better here in Southern Illinois. (6 hours South of Chicago) We have two choices , AT&T or Verizon. (No Sprint coverage) I really want to know who supports BlackBerry better! My contract will be up by the time the ink dries on the final paper work. Thanks for any and all replies.

I thought Verizon bought Alltel.

Edit: Ok I am caught up. Verizon bought Alltel, but in over lapping markets with Verizon and Alltel, AT&T bought them.

I never answered your question. They probably support them about the same. Just go into each store and look around.