To the Question you asked the answer is yes you pay full retail you retain your unlimited.. the only thing that would change what your wanting to do and what I did and several have done on this forum and retained there Unlimited is for Verizon to officially announce there pulling all unlimited plans away from customers if they do that then it the end for Unlimited) 

So go with your heart and if the feeling is to stay unlimited pay the full retail and join us customers that are already running our plans month to month b33