Renault

Speaking of Renault, if I had to pick my favorite to be at the top of the midfield battle, at least at the start of the season before upgrades start being brought in, it would be this team.
A proven track record as the engine supplier to Red Bull, a good team, a strong finish last season and quite possibly the most exciting driver lineup on the grid.
Putting aside whether Daniel Ricciardo’s move was from fear of Max or abandoning the sinking ship that is Red Bull (more on that in a second) Riccardo and Hulkenberg are in my opinion two of the best drivers on the grid and with a good package car under them should not only be fighting for the top of the midfield, but also looking for a few higher place finishes as the inevitable penalties for new parts and collisions take place in the Championship battle.
If there is anything to worry about with Renault it would be just how powerful is their engine, if Red Bull were eager to drop them to put in a Honda engine that has since coming back been anything but stellar.