White: Vienna Game (helped me increase my rating from 1300 to 1900+) and Scotch Game
Black: Sicilian Dragon (specifically the Accelerated Dragon for me; it helped me beat strong players and is very fun to play for positional players)
However, in order to find the right opening, you need to find your chess style/personality. You can do that on chesspersonality.com or chessiverse.com.
Ruy lópez for white,Sicilian dragon for Black.