Another thing, when you called again and finally got someone that knows what they are talking about, all they did was repeat what is already in the NEXT FAQ's that's on AT&T's website which is not vague. It's printed clearly. That's why I don't really go by what AT&T reps tell me when it comes to their terms. If they tell you any different, you need to call them out on it. It's the only way they will learn. Why would anyone cancel the NEXT plan other than for shutting down service for that line? If I pay the device off in full early, my monthly bill goes down. If I want to change my service plan, the price of the installment amount won't change. Just the price of the new service plan. If you decide to subsidize for the next iPhone and you've paid the device off in full prior to the launch, you are no longer under the NEXT plan because you are longer financing the device so you should be able to subsidize your next phone if you like.A final thought on this opting out thing, i got curious as to why these reps keep telling me 12 months needed before you can opt out, then i called a few more and now they are telling me its at least two months before you can pay it all off, also they said if you "cancel" your account THEN you can opt out and pay in full, but not if you just want to cancel the next program, then its at least 2 months..which probably isn't a big deal though..but i would say this qualifies as vague, they list one thing in writing and their policy means something else..
Heres an article that talks about and how your really paying more on the next program: