I switched to Spectrum Mobile a couple of months ago.  Went from $185 a month for my wife's and my phone down to $59-$73 (my phone is unlimited, my wife's is on the by the gig plan, so it varies).  She would have to go over by 2 GB before it makes sense to put her on unlimited so for now we roll the dice.  It works on the Verizon Network, so we have the same coverage as before, just way cheaper.