Verizon pre-paid - a $30 card is good for 90 days, the $15 cards are only good for 30. I had Straight Talk for awhile and while they said they use Verizon towers, there were areas that I didn't have service, but my wife had a regular Verizon phone and she was able to make and receive calls.
I'm sure that they have cards for more than $30, so the price per month would drop accordingly
I'm sure that they have cards for more than $30, so the price per month would drop accordingly