So I'm thinking about getting the new 8GB 3G iPhone, but I have a few questions first. 1. What EXACTLY do I get with the $30/month data plan? Like is it text, data, or internet? How good is it? Is it justified to any degree? 2. If after 1-2 months I decide that I no longer want to pay for the data plan, can I disconnect that line [iPhone], and then add a "new" line to the family plan, with the new line being a hacked/unlocked iphone? Basically I'm asking if I can hack the iphone and still use it on AT&T WITHOUT paying for the data plan? 3. IS the iphone worth spending so much money on? Thanks!