I must have not been paying attention, but when did ATT plans get so terrible? I'm on a 2GB /$25 plan which obviously hasn't existed for a long time, but I remember there being a 3 GB for $30. When did that go away?
Those types of plans are "data only". You add them on to a plan (which will cost you around $25 or so minimum) for voice and perhaps something extra, $5 or so, for texts. And remember, because this is ATT, add up everything then multiply that by 1.25x to account for the ninety random ******** fees, taxes, duties, rents, leases and other nickel-and-dimey stuff they will add to your bill.
Basically there's not much different here if you are a single device user unless some aspect of the plan really matches your needs. Perhaps unlimited voice and text excite you (not me). Perhaps the device sharing really meets your needs (but let me guess that doesn't include tethering to laptops?) Perhaps the data tiers exactly match what you need and give you a slightly lower price?
ATT seems to have decided recently that having each customer spend an hour with salespeople in their stores figuring out a plan is not an efficient use of company resources, and they'd be better off upping that to two hours.
Hence last week's new set of variations on how to pay for handsets --- none obvious or simple --- and today's essentially the same prices for essentially the same plans, just with new names.
See my previous post about how this whole business is just insane, just waiting for disruption by a company that's not populated by morons.