So I'm checking Amazon for the "3G Launch Bundle" and the "First Edition Bundle". Which one is a better deal? I assume the 3G launch Bundle is because you get to download any free game you want and the system of both bundles are the same. The 3G Launch Bundle also includes a 8gb memory, while first edition is only 4? Also do you have to have a contract with At&T. That was never made very clear. If I buy 3G can I just run the wifi?