Do what I did, buy an unlimited verizon plan from someone. There is also a trick to get the unlimited plan but not sure if it still works or not.
As for which phone to get, if you don't need a keyboard the GSIII is ok.
Otherwise there is always this:
Samsung Stratosphere II flaunts its keyboard for Verizon, LG Spectrum 2 confirmed as VS930 - Engadget
Though full specs are not out just yet.