There is no hard and fast answer. A lot depends on your style and strengths vs weaknesses. Some people know nothing but tactics. Their strategic skill is atrocious. For others, like myself, they can be tactically weak and have a good understanding of strategy. So what someone else plays that posts here may be useless to you or vice versa.
I play the Trompowsky, Levitsky, Exchange Slav, French, Modern, and Saemisch Kings Indian as White. Petroff, Dutch, and French as Black. But what I play doesn't matter. If you can't play this type of game, what good does it do you?
Does anyone know any good chess openings?