I have a 1st gen. iPhone jailbroken and unlocked (originally bought in the US, but used in Europe - I just moved to the US/Boston). I was wondering whether there are any alternatives to the AT&T phone plans? I have always been using pay-as-you-go plans, but I have been unable to find plans in the USA that supports internet access on the iPhone (I used to live in the UK).

Does anybody have any suggestions? I think the AT&T iPhone plans are a tad to expensive, but I hate not having access to the internet via my phone.

Thanks very much in advance!