They're the same company, no need to bother getting a straight talk one.

There is an invisible data cap of roughly 2GB a month (going by people who have gone over around that and posted about it on the internet) with either, so be careful. Word is you usually get away with it once by making a phone call, the second time they just kick you off. I've never hit it, so I don't know.
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Heather

"I distrust those people who know so well what God wants them to do because I notice it always coincides with their own desires." -Susan B Anthony