Hello, I'm sorry I'm just a bit confused with all of the options available. Currently I have a single phone line with 450 minutes, unlimited text and unlimited data. I also have a basic iPhone 5. I checked on the AT&T website and I could save about $15 a month if I switched to the unlimited talk/text with 5 gig data plan. Currently, I average about 2.5 gigs a month. Is there really any reason to keep the unlimited data plan and sign up for another 2 year contract? Or should I reduce my bill with the 5 gig plan and get AT&T next so I can get a new phone every year? And If I did want a new phone every year, do I select the 12 month program? I'm confused on how the 12/18/24 month programs work. If I select the 18 month program do I have to wait 18 months to upgrade or is there a penalty to upgrade after 1 year? I am hoping to preorder the 64gig space gray iPhone 6S+ tonight. I would appreciate any advice, thanks.