Hi, I just came back from a trip to Europe where I used my new iPad 2, which is designed for AT&T 3G. In Germany, Czech Republic and Hungary I bought prepaid micro-SIM cards (coincidentally all from T-Mobile, but that was just because it was convenient), and it worked fine. I'd like to activate a 3G plan for use with the iPad in the United States. Depending on the terms I'd be okay with either a contract or prepaid (if the latter is even available here). Are there alternatives to consider besides AT&T? I heard that T-Mobile might be offering an iPad-compatible micro-SIM in the U.S., but am having trouble finding any information about this on its website.