It's impossible in football to say who's the best player. Ronaldo is the best offensive midfielder in the world. Gerrard / Lampard is the best all-round midfielders. But how do you compare them to Terry who is the best defender or Cech who is the best goalkeeper? In my opinion you can't say who's the best player you can only say who's the best player in a certain position
Drogba, he scores at will, is more versatile than rooney although less cunning than lampard who appears as magic when least expected.