I currently have a flip phone with AT&T. If I do the two year contract I can get the Iphone 6 plus 64 gig for 399 and my phone bill will be $65 a month with out taxes. or I can do the next option and I will have to pay over 800 for the phone but my monthly bill will be $50 a month with out taxes. if I do get the phone I will only get unlimited talk text and 1 gb of data. which option would be the most economical I don't want to spend more than I have to