The question is invalid!
Write the code that makes sense for your problem. This is not religion where choosing the wrong thing can land you in hell for eternity or whatever it is your gods will do if they don't like you. You should be mixing OO, functional, and procedural code all the time as each does some things well and some things poorly. Of course don't create a mess by the mix, but good code has a need for all 3 styles. (IIRC there are more styles the good code needs, but I can't think of what it might be at the moment)