I am interested in either Tmobile or Virgin Mobile or Straight Talk (Walmart?). I currently pay $85 month (plus taxes) for only 450 minutes and 25 texts. Virgin Mobile offers a new iphone for $550 and a monthly play of 1200 minutes for $40 bucks with unlimited data and texts. Has anyone switched off ATT to another carrier that was no-contract. What was your experience? Would you recommend? Also, do you live in a rural region of the country or urban? (I live in a rural region just north of San Francisco) Advice is greatly appreciated. This is a big decision for me so the more feedback I have from other iphone users, the better.