Alltel? Seriously? Take it from someone who has sold cell phones for every major carrier (and most of the smaller ones): There is a reason why Alltel sold so cheap to Verizon. They're basically just a Verizon MVNO nowadays. Somewhere around 75-80% of their coverage base is supplied by-- ding, Verizon O&O towers.
If you're shopping for a cell phone contract on price alone nowadays, you should be buying Sprint. $69.99 for unlimited data, messaging, and calling to every mobile phone in America. No, I'm not a corporate rep-- anymore. Just like I'm no longer a corporate rep for AT&T, USCellular, or anyone else. Stay informed, people.
(No, I'm not going to knock Verizon. I'm not a fan of them, but they have better coverage than anyone, at least out west where I'm at. They're expensive, but in certain places, you get what you pay for.)