not sure if this is the right forum or not, but with AT&T and Verizon now offering unlimited plans, I figured I'd see if it made sense to switch. We have four iPhones, i'm paying $90 a month for family sharing plan with 16 GB of data, plus I get an additional 8 GB in 'bonus' data for free. Typically we use 22-23 GB per month, anything that we don't use rolls over (the bonus data doesn't roll over, so we'd have to be under 16 GB in use to have any roll-over.)
Verizon is quoting me $110 per month for the unlimited plan. However, the unlimited plan isn't really unlimited. Once you go over 22 GB in a month, they reserve the right to throttle your connection (likely down to 2G or 3G speeds). This is the same approach that Sprint and T-Mobile take with their "unlimited" plans, which is why we picked Verizon. At this point I don't see it being worth the extra $20 a month to change to unlimited.