Well this is different for everyone, depends on everyone needs, I for example still have unlimited data, and a family shared plan but not sharing data, right now am paying 228 dollars a month, in a month I use arround 12 gb average, that even with at&t slowing down my data after 5gb. My wife, kids, mother in law. Hardly use the 3 gb they have allowed, so aT&t wanted me to get the 20gb a month, so I could save what, arround 18 dollars a month, and I was thinking on doing it, until I found out, that if I upgrade anyof those lines to a subsidized smartphone, instead of 15 for each additional line it would be ( 40 ). so lets see 210 a month that seemed less now add up 25 more, I have 5 lines that would be 125 + 210 = 335. But no choose the next plan, okay so how much will that be? 27 additionall for each line so again 27 x 5 =135. So 135 + 210 wow now I would pay monthly 345 dollars. Eh no AT&T thanks but hell no. I will keep using my unlimited data and stay on 228 a month, oh and I updated 2 lines to the note 3 refurbished when it was on 100.00 (stupid me) a few days later the took it down to free. But I still got two more updates in october and december, at that moment I will see if the note 4 is a good buy, and I will pay 300 one time, and I will keep paying 228 a month. AT&T will say, well sir with next you don't have to put 300 down at the moment, but I rather paying 300, one time, than raising my bill to 350. I will then sell my current note 3 on ebay, and that will bring my 300 dollars back.