Switching Phone Companys

So heres my little issue Alltel up here was purchased a year ago by AT&T and they kept saying we're switching in the near futures. So I held off to upgrade my phone until June...Well I spent $200 and got a $100 rebate on my phone the HTC Hero. I just found out soon they are giving me a choice of what phone I want from AT&T.

Anyone got AT&T and got any ideas because if they're giving me a "like4like" phone. Which mines I get a phone like mine they'd be offering me any phone pretty much I'm guessing minus the Iphone 4. But I'm curious also on the plans since I've been reading the most you can get for a data plan is 2GB a month which I'd run over easily just by messing around online.

 

They will give you a little pamphlet with the phones you can pick from listed. obviously they're not all there though.

 

Yea I know my phone when I bought it was top of Alltels phones, but I was looking at the Iphone 3GS and they said that would be $99 so I'm guessing I'd get that as an option.

I'd rather get a Iphone 3GS than the new one.