FiOS through verizon was great, really great when we had it in MD, USA. The bulk of the matter during installation is to get (out of your control unfortunately, they are hired by verizon, you get a random person) a proficient contractor to do the installation from the street FO to your home, including the box. In our case, one guy came over and he screwed up the installation of the backup battery in the box. Usually installed in the basement. After the connection from the street to the box was done, then a verizon guy shows up to do the in-house setting up.
Good luck!
this is what I get here