My choices...
Lewis Hamilton. Bottas will never be able to take it to Hamilton. As much as he likes to think he can.
Sebastian Vettel. Ferrari's number one driver so it's a given.
Max Verstappen. Red Bull have openly stated they are backing Verstappen for the title.
Sergio Perez. Ocon is the better driver IMO, but I think Perez's experience will see him finish in front. Just.
Lance Stroll. Think he might surprise us. Lance FTW!
Carlos Sainz Jnr. Sainz is a better driver and a better racer IMO than Hulkberger. It'll be close though.
Brendon Hartley. Another close finish, but Hartley should have it over his team mate.
Romain Grosjean. Frenchie should have it over Dutchie. Another close battle though.
Fernando Alonso. McLaren will do whatever to keep him happy. Even if it means asking Vandoorne to move over.
Charles Leclerc. Simply because I don't think Ericsson should even be on the grid. Hope Leclerc annihilates him!