Unfortunately, unless you're familiar with all the taxes and fees charged by the feds, your state, your county, your city, etc, estimating taxes isn't very straightforward.
That said, Cricket is a good option if you've got good AT&T service. Of course, you just need to pay upfront for your phones and you'd need a separate plan for the iPad as I don't believe Cricket has data plans for tablets.
Taxes can be a nightmare to calculate - and pay. Here in San Francisco, they are out of control. You are quite right and answered the OP answers completely. Your analysis is complete and Verizon is the best service you can get according to Consumer Reports. That being said, I have an
