my wife and I are on an AT&T family plan, and up until recently was fine but just found out the hard way that I get an upgrade every 12 mos and my wife gets an upgrade every 18 mos. I am looking at dropping the family plan and doing 2 single lines and trying to figure out the monthly cost. Does anyone have an iPhone on a single line plan? I am looking at doing the 450 minute plan, hoping to carry over her unlimited data plan if not we are going to the $15 200mb plan, and 1500 messages for $15.00 a month. Trying to figure out the taxes part of this to figure out how much extra it would be. Before taxes (assuming the 200mb plan) we are looking at $69.99 and I am guessing taxes will be around $15 a month?