I have fios with 3 tivo DVrs I bought about 3 years ago....I broke even after about 28 months and now I am SAVING $60/month in dvr fees and the boxes are mine.
Get a roamio with lifetime, add minis throughout the house, add lifetime to everything and after about 2 years or so..you start saving a crap load of money a month. And you have a much better experience.
Or continue paying fios for a crappy dvr for infinity and that you don't own. How long have you had a dvr for in your lifetime? If its over 10 years...well...calculate your $20 times ten years and that's how much money you gave to borrow a crappy dvr.